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302 Cards in this Set
- Front
- Back
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Origin of Palmar (Volar) Interossei
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1st head – ulnar side of the palmar surface of the base of the 1st metacarpal; 2nd head – ulnar side of 2nd metacarpal bone; 3rd head – radial side of 4th metacarpal bone; 4th head – radial side of 5th metacarpal bone
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Insertion of Palmar (Volar) Interossei
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1st head – sesamoid bone on the ulnar side of the proximal phalanx of the thumb; 2nd head – ulnar side of 1st phalanx of second finger; 3rd head – radial side of first phalanx of fourth finger; 4th head – radial side of 1st phalanx of 5th finger
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Action of Palmar (Volar) Interossei
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Adduction of 1st, 2nd, 4th and 5th fingers toward the 3rd finger
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Innervation of Palmar (Volar) Interossei
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Ulnar (deep volar branch)
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Origin of Dorsal Interossei
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The 4 dorsal interossei each arise by 2 heads from the adjacent sides of metacarpal bones
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Insertion of Dorsal Interossei
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1st head – radial side of 1st phalanx of 2nd finger; 2nd head – radial side of 1st phalanx of 3rd finger; 3rd head – ulnar side of 1st phalanx of 3rd finger; 4th head – ulnar side of first phalanx of 4th(ring) finger
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Action of Dorsal Interossei
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1st & 4th heads abduct 2nd and 4th fingers from 3rd finger; 2nd and 3rd pull 3rd finger medially or laterally
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Innervation of Dorsal Interossei
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Ulnar (deep volar branch)
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Origin of Latissimus Dorsi
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Lower six thoracic spines, lumbar and sacral spines, crest of ilium
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Insertion of Latissimus Dorsi
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Intertubercular groove on humerus – usually receives fibers on scapular inferior angle
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Action of Latissimus Dorsi
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Adduction, extension and internal rotation of shoulder, shoulder girdle depression
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Innervation of Latissimus Dorsi
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Thoracodorsal
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Origin of Teres Major
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Dorsal surface of axillary border of scapula near inferior angle
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Insertion of Teres Major
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Medial lip of intertubercular groove
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Action of Teres Major
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Extension, adduction, and internal rotation of shoulder
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Innervation of Teres Major
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Lower subscapular
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Origin of Triceps
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Long head – infragleniod tubercle; lateral head – back of humerus from middle of shaft to greater tuberosity; medial head – lower posterior part of humerus
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Insertion of Triceps
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Olecranon process of ulna
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Action of Triceps
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Long head – shoulder extension and adduction; all parts – elbow extension
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Innervation of Triceps
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Radial
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Origin of Supraspinatus
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Surface of scapula above the spine (supraspinous fossa)
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Insertion of Supraspinatus
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Greater tubercle of humerus, upper facet
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Action of Supraspinatus
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Shoulder abduction
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Innervation of Supraspinatus
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Suprascapular
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Origin of Infraspinatus
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Infraspinous fossa of scapula
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Insertion of Infraspinatus
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Middle facet of greater tubercle of humerus
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Action of Infraspinatus
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Shoulder external rotation
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Innervation of Infraspinatus
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Suprascapular
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Origin of Teres Minor
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Dorsal surface of axillary border of scapula
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Insertion of Teres Minor
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Lower facet of greater tubercle of humerus
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Action of Teres Minor
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Shoulder external rotation
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Innervation of Teres Minor
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Axillary
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Origin of Trapezius
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External occipital protuberance, ligamentum nuchae, thoracic vertebrae (supraspinal ligaments)
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Insertion of Trapezius
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Lateral portion of clavicle, acromion, spine of scapula
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Action of Trapezius
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Elevation, adduction, and upward rotation of shoulder girdle (upper part); adduction of scapulae (middle part); depression, adductucion and upward rotation of shoulder girdle (lower part)
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Innervation of Trapezius
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Spinal accessory 11th cranial
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Origin of Rhomboids
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Spines of last cervical and first five thoracic vertebrae
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Insertion of Rhomboids
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Vertebral border of scapulae (below spine)
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Action of Rhomboids
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Elevation, adduction, downward rotation of scapula
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Innervation of Rhomboids
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Dorsal scapular
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Origin of Levator Scapulae
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Transverse processes of first 3 or 4 cervical verebrae
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Insertion of Levator Scapulae
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Vertebral border of scapula above spine
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Action of Levator Scapulae
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Elevation, adduction, downward rotation of scapula
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Innervation of Levator Scapulae
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Dorsal Scapular
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Origin of Pectoralis Minor
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3rd, 4th, and 5th ribs
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Insertion of Pectoralis Minor
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Coracoids process
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Action of Pectoralis Minor
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Depression and abduction of scapula (anterior tilting of scapula)
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Innervation of Pectoralis Minor
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Medial pectoral
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Origin of Serratus Anterior
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Upper eight of nine ribs
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Insertion of Serratus Anterior
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Costal surface of medial border of scapula
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Action of Serratus Anterior
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Abduction of scapula, lower portion pulls inferior angle lateral thereby assisting the trapezius in upward rotation
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Innervation of Serratus Anterior
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Long Thoracic
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Origin of Subclavius
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Upper border of 1st rib
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Insertion of Subclavius
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Clavicle (Lateral part of inferior surface of clavical)
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Action of Subclavius
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Depression of clavical
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Innervation of Subclavius
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5th & 6th cervical nerve roots (subclavian)
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Origin of Anconeus
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Posterior Surface of external condyle of humerus
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Insertion of Anconeus
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Olecranon and shaft of ulna
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Action of Anconeus
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Elbow extension
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Innervation of Anconeus
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Radial
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Origin of Supinator
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Lateral epicondyle of humerus and supinator crest of ulna
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Insertion of Supinator
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Lateral and anterior aspect of radius
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Action of Supinator
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Supination and extension of forearm
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Innervation of Supinator
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Radial
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Origin of Brachialis
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Lower half of anterior surface of humerus
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Insertion of Brachialis
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Ulna, just below coronoid process (ulnar tuberosity)
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Action of Brachialis
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Elbow Flexion
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Innervation of Brachialis
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Musculocutaneous and usually radial
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Origin of Brachioradialis
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External supracondylar ridge of humerus
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Insertion of Brachioradialis
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Styloid process of radius
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Action of Brachioradialis
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Elbow flexion, half pronation from supination and half supination from pronation
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Innervation of Brachioradialis
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Radial
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Origin of Pronator Teres
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Medial epicondylar ridge and medial side of coronoid process
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Insertion of Pronator Teres
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Middle lateral surface of shaft of radius
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Action of Pronator Teres
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Pronation and elbow flexion
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Innervation of Pronator Teres
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Median
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Origin of Pronator Quadratus
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Lower 4th and anterior border of ulna
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Insertion of Pronator Quadratus
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Lower fourth of lateral anterior surface of shaft of radius
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Action of Pronator Quadratus
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Pronation
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Innervation of Pronator Quadratus
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Median
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Origin of Flexor Carpi Radialis
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Medial epicondyle of humerus
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Insertion of Flexor Carpi Radialis
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2nd metacarpal on anterior, plus a slip to the 3rd metacarpal
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Action of Flexor Carpi Radialis
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Wrist flexion and radial deviation, elbow flexion
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Innervation of Flexor Carpi Radialis
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Median
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Origin of Palmaris Longus
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Medial epicondyle of humerus
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Insertion of Palmaris Longus
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Palmar fascia and transverse carpal ligament
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Action of Palmaris Longus
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Wrist flexion, elbow flexion
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Innervation of Palmaris Longus
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Median
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Origin of Flexor Carpi Ulnaris
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Medial epicondyle of humerus, and proximal posterior surface of ulna
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Insertion of Flexor Carpi Ulnaris
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Pisiform, hamate, 5th metacarpal
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Action of Flexor Carpi Ulnaris
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Wrist flexion and ulnar deviation, elbow flexion
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Innervation of Flexor Carpi Ulnaris
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Ulnar
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Origin of Flexor Digitorum Superficialis
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Medial epicondyle of humerus and anterior oblique line of radius, coronoid process of ulna
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Insertion of Flexor Digitorum Superficialis
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Middle phalanges of 2nd and 5th fingers
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Action of Flexor Digitorum Superficialis
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Flexion of the middle and proximal phalanges of four fingers, wrist flexion and elbow flexion
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Innervation of Flexor Digitorum Superficialis
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Median
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Origin of Flexor Digitorum Profundus
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Proximal 2/3 of the anterior and medial surface of the ulna
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Insertion of Flexor Digitorum Profundus
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Terminal phalanges of 2nd to 5th fingers
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Action of Flexor Digitorum Profundus
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Finger flexion, wrist flexion
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Innervation of Flexor Digitorum Profundus
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Ulnar, median
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Origin of Flexor Pollicis Longus
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Volar surface of body of radius and interosseous membrane
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Insertion of Flexor Pollicis Longus
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Base of terminal phalanx of thumb
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Action of Flexor Pollicis Longus
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Flexes thumb and wrist
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Innervation of Flexor Pollicis Longus
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Median
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Origin of Extensor Carpi Ulnaris
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Lateral epicondyle of humerus and posterior lateral ulna
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Insertion of Extensor Carpi Ulnaris
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5th metacarpal (medial side of base)
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Action of Extensor Carpi Ulnaris
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Wrist extension and ulnar deviation
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Innervation of Extensor Carpi Ulnaris
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Radial
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Origin of Extensor Carpi Radialis Longus
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Lateral supracondylar ridge of humerus
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Insertion of Extensor Carpi Radialis Longus
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Base of 2nd metacarpal on dorsal surface
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Action of Extensor Carpi Radialis Longus
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Wrist extension and radial deviation, elbow flexion
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Innervation of Extensor Carpi Radialis Longus
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Radial
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Origin of Extensor Carpi Radialis Brevis
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Lateral epicondyle of humerus
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Insertion of Extensor Carpi Radialis Brevis
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Base of 3rd metacarpal on dorsal surface
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Action of Extensor Carpi Radialis Brevis
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Wrist extension and radial deviation, elbow flexion
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Innervation of Extensor Carpi Radialis Brevis
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Radial
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Origin of Extensor Digitorum
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Lateral epicondyle of humerus
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Insertion of Extensor Digitorum
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Four tendons into extensor expansion of the 2nd - 5th fingers
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Action of Extensor Digitorum
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Extension of metacarpophalangeal joints, wrist extension
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Innervation of Extensor Digitorum
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Radial
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Origin of Extensor Digiti Minimi
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Lateral epicondyle of humerus
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Insertion of Extensor Digiti Minimi
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Dorsum of proximal phalanx of 5th finger and the tendon of extensor digitorum
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Action of Extensor Digiti Minimi
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Extends and abducts fifth finger, wrist extension
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Innervation of Extensor Digiti Minimi
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Radial
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Origin of Abductor Pollicis Longus
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Posterior surface of radius and ulna
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Insertion of Abductor Pollicis Longus
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Base of 1st metacarpal
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Action of Abductor Pollicis Longus
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Extends 1st metacarpal, wrist radial deviation
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Innervation of Abductor Pollicis Longus
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Radial
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Origin of Extensor Pollicis Brevis
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Posterior surface of radius, interosseous membrane
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Insertion of Extensor Pollicis Brevis
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Posterior surface of 1st phalanx of thumb
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Action of Extensor Pollicis Brevis
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Extends proximal phalanx of thumb and radial deviation
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Innervation of Extensor Pollicis Brevis
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Radial
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Origin of Extensor Pollicis Longus
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Middle 1/3 of dorso-lateral surface of ulna, interosseous membrane
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Insertion of Extensor Pollicis Longus
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Base of 2nd phalanx of the thumb
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Action of Extensor Pollicis Longus
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Extends distal phalanx of thumb, extends 1st metacarpal, radial deviation, wrist extension
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Innervation of Extensor Pollicis Longus
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Radial
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Origin of Extensor Indicis
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Dorsal surface of ulna from middle to lower portion and interosseous membrane of its distal end
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Insertion of Extensor Indicis
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2nd and 3rd phalanges of index finger (via tendon of extensor digitorum longus)
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Action of Extensor Indicis
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Extends index finger, wrist extension
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Innervation of Extensor Indicis
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Radial
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Origin of Opponens Pollicis
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Transverse carpal ligament, ridge of greater multangular
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Insertion of Opponens Pollicis
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Whole length of lateral border of the 1st metacarpal
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Action of Opponens Pollicis
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Thumb opposition
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Innervation of Opponens Pollicis
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Median (superficial volar branch)- has branch from deep terminal branch of ulnar nerve 75%
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Origin of Abductor Pollicis Brevis
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Ridge of greater multangular, tuberosity of navicular and transverse carpal ligament
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Insertion of Abductor Pollicis Brevis
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Radial side of 1st phalanx of thumb
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Action of Abductor Pollicis Brevis
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Abducts phalanx of thumb and first metacarpal
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Innervation of Abductor Pollicis Brevis
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Medial (superficial volar branch)
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Origin of Flexor Pollicis Brevis
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Lower border of transverse carpal ligament and ridge of greater multangular
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Insertion of Flexor Pollicis Brevis
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Radial side of base of 1st phalanx of thumb
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Action of Flexor Pollicis Brevis
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Flexes 1st phalanx of thumb, and 1st metacarpal
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Innervation of Flexor Pollicis Brevis
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Median
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Origin of Adductor Pollicis
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Transverse head from3rd metacarpal bone; oblique head from capitate, the bases of the 2nd and 3rd metacarpal bones and great and lesser multangular
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Insertion of Adductor Pollicis
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Ulnar side of first phalanx of thumb
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Action of Adductor Pollicis
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Adducts and flexes proximal phalanx of thumb and first metacarpal, aids in opposition
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Innervation of Adductor Pollicis
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Ulnar (deep volar branch)
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Origin of Palmaris Brevis
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Ulnar side of transverse carpal ligament and palmar fasica
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Insertion of Palmaris Brevis
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Skin on ulnar border of palm
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Action of Palmaris Brevis
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causes skin of ulnar border of the palm to wrinkle, deeps the palm of the hand
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Innervation of Palmaris Brevis
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Ulnar (superficial volar branch)
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Origin of Lumbricals (4)
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Palm of hand from tendons of flexor digitorum profundus (2nd to 5th fingers)
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Insertion of Lumbricals (4)
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Tendons of extensor digitorum communis (extensor expansion)
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Action of Lumbricals (4)
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Flexion of MCP joints and extension of interphalangeal
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Innervation of Lumbricals (4)
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Median for 1st and 2nd fingers, ulnar for 3rd and 4th fingers
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Origin of Abductor Digiti Minimi
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Pisiform bone and tendon of flexor carpi ulnaris
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Insertion of Abductor Digiti Minimi
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Median margin of base of 1st phalanx of 5th finger
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Action of Abductor Digiti Minimi
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Abducts 5th finger
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Innervation of Abductor Digiti Minimi
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Ulnar (deep volar branch)
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Origin of Flexor Digiti Minimi Brevis
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Transverse carpal ligament, hamulus of hamate bone
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Insertion of Flexor Digiti Minimi Brevis
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Ulnar side of base of proximal phalanx of 5th finger
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Action of Flexor Digiti Minimi Brevis
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Flexes proximal phalanx of 5th finger
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Innervation of Flexor Digiti Minimi Brevis
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Ulnar (deep volar branch)
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Origin of Opponens Digiti Minimi
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Flexor retinaculum, hamulus of hamate bone
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Insertion of Opponens Digiti Minimi
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Ulnar side of 5th metacarpal bone
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Action of Opponens Digiti Minimi
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Moves 5th metacarpal bone forward (opposition)
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Innervation of Opponens Digiti Minimi
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Ulnar (deep volar branch)
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Origin of Dorsal Interossei (4)
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The 4 dorsal interossei each arise by 2 heads from the adjacent sides of metacarpal bones
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Insertion of Dorsal Interossei (4)
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1st head – radial side of 1st phalanx of 2nd finger; 2nd head – radial side of 1st phalanx of 3rd finger; 3rd head – ulnar side of 1st phalanx of 3rd finger; 4th head – ulnar side of first phalanx of 4th(ring) finger
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Action of Dorsal Interossei (4)
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1st & 4th heads abduct 2nd and 4th fingers from 3rd finger; 2nd and 3rd pull 3rd finger medially or laterally
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Innervation of Dorsal Interossei (4)
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Ulnar (deep volar branch)
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Origin of Palmar (Volar) Interossei (4)
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1st head – ulnar side of the palmar surface of the base of the 1st metacarpal; 2nd head – ulnar side of 2nd metacarpal bone; 3rd head – radial side of 4th metacarpal bone; 4th head – radial side of 5th metacarpal bone
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Insertion of Palmar (Volar) Interossei (4)
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1st head – sesamoid bone on the ulnar side of the proximal phalanx of the thumb; 2nd head – ulnar side of 1st phalanx of second finger; 3rd head – radial side of first phalanx of fourth finger; 4th head – radial side of 1st phalanx of 5th finger
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Action of Palmar (Volar) Interossei (4)
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Adduction of 1st, 2nd, 4th and 5th fingers toward the 3rd finger
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Innervation of Palmar (Volar) Interossei (4)
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Ulnar (deep volar branch)
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Origin of Rectus Abdominis
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of os pubis and symphysis pubis
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Insertion of Rectus Abdominis
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Tip of sternum(xiphoid process) and costal cartilage of the 5th,6th and 7th ribs
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Action of Rectus Abdominis
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Trunk flexion and assist in lateral flexion
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Innervation of Rectus Abdominis
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Branches of 6 or 7-12(thoracic) intercostal nerves
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Origin of External oblique
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Outer surface of lower eight ribs near their costal endings
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Insertion of External oblique
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Anterior half of outer lip of crest of ilium, inguinal ligament, linea alba
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Action of External oblique
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Trunk flexion, lateral flexion, and rotation to the opposite side
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Innervation of External oblique
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Branches of 8-12 intercostal and the iliohypogastric and ilioinguinal
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Origin of Internal Oblique
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Lateral half of inguinal ligament; Anterior half of middle lip of crest of ilium; lumbar fascia
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Insertion of Internal Oblique
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Costal cartilage of lower 3 ribs, remainder spread fan-like and terminates as aponuerosis extending from the 10th costal cartilage to the pubic bone, forming linea alba in the ventral mid-line
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Action of Internal Oblique
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Trunk flexion, lateral flexion and rotation to the same side
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Innervation of Internal Oblique
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Branches of 8-12 intercostal and the iliohypogastric and ilioinguinal
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Origin of Transverse Abdominis
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Inner lip of iliac crest, lateral third of inguinal ligament, thoracolumbar fascia, cartilage of lower six ribs
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Insertion of Transverse Abdominis
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Linea Alba
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Action of Transverse Abdominis
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Constricts abdomen, compresses content, hold viscera wihtin the pelvic circle
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Innervation of Transverse Abdominis
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Brances of 7-12 intercostal and the iliohypogastric and ilioinguinal
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Origin of Quadratus Lumborum
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Posterior part of the crest of the ilium and from the superior border to the transverse process of lower 3 or 4 lumbar verebrae
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Insertion of Quadratus Lumborum
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Last rib and inferior border of the transverse process of upper lumbar vertebrae
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Action of Quadratus Lumborum
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Elevates pelvis, laterally flexes the trunk
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Innervation of Quadratus Lumborum
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T12 and L1
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Origin of Diaphragm
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Sternal and costal cartilages; six or seven lower ribs; arcuate ligament; lumbar vertebrae
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Insertion of Diaphragm
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Central tendon
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Action of Diaphragm
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Inspiration
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Innervation of Diaphragm
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Phrenic
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Origin of External intercostals
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Lower border of upper eleven ribs
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Insertion of External intercostals
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Upper border of last eleven ribs
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Action of External intercostals
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Inspiration
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Innervation of External intercostals
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Intercostal nerves T1-12
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Origin of Internal Intercostals
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Inner Surface
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Insertion of Internal Intercostals
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Upper border of last eleven ribs
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Action of Internal Intercostals
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Inspiration (interchondral portion), forced expiration (interosseous portion)
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Innervation of Internal Intercostals
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Intercostal nerves T1-12
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Origin of Spinalis (Thoracis, cervicis, and capitis)
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Spinous process of upper lumbar and lower thoracic vertebrae
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Insertion of Spinalis (Thoracis, cervicis, and capitis)
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Spinous process of upper thoracic and cervical verbrae, except C1
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Origin of Longissimus (Thoracis, cervicis and capitis)
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Broad aponuerosis in upper lumbar and lower thoracic, transverse process of upper 5 thoracis verbebrae
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Insertion of Longissimus (Thoracis, cervicis and capitis)
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Lower 9 ribs and transverse thoracic verebrae, tranverse process of cervical vertebrae, mastoid process of temporal bone
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Origin of Intercostalis (lumborum, thoracis and cervicis)
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sacrospinal aponuerosis and iliac crest, posterior surface of ribs 1-12
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Insertion of Intercostalis (lumborum, thoracis and cervicis)
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Transverse process of lumbar vertebrae 1-3 and posterior surface of ribs 6-12, posterior surface of ribs 1-6, transverse pocess of lower cervical vertebrae
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Origin of Splenius Capitis
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Lower half of the ligametum nuchae and spines of C7 to T3 or T4.
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Insertion of Splenius Capitis
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Under sternocleidomastoid to the mastoid process of the temporal bone and the lateral third of the superior nuchal line of the occipital bone
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Action of Splenius Capitis
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Lateral flexion of head to same side with slight rotation and together head extension
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Innervation of Splenius Capitis
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Lateral branches of dorsal rami of spinal nerves
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Origin of Splenius Cervicis
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Spines of T3-T6
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Insertion of Splenius Cervicis
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Posterior tubercles of the transverse process of C2 & C3
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Action of Splenius Cervicis
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Lateral flexion of head to same side with slight rotation and together head extension
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Innervation of Splenius Cervicis
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Lateral branches of dorsal rami of spinal nerves
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Origin of Semispinalis Capitis
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Tips of transverse process of C7-T6 or T7; articular processes of C4-C6; and spine of C7 or T1.
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Insertion of Semispinalis Capitis
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Between superior and inferior nuchal lines of the occipital bone
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Action of Semispinalis Capitis
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Together neck extension and independently lateral flexion to same side
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Innervation of Semispinalis Capitis
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Dorsal rami of cervical and thoracic nerves
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Origin of Semispinalis Cervicis – tendinousous and fleshy fibers
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Transverse processes of T1-T5 or T6
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Insertion of Semispinalis Cervicis – tendinousous and fleshy fibers
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Spinous processes of C2-C5
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Action of Semispinalis Cervicis – tendinousous and fleshy fibers
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Together neck extension and independently lateral flexion to same side
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Innervation of Semispinalis Cervicis – tendinousous and fleshy fibers
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Dorsal rami of cervical nerves
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Origin of Multifidus
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Fill up the space on either side of the spinous processes from the axis to the sacrum
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Insertion of Multifidus
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Fill up the space on either side of the spinous processes from the axis to the sacrum
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Action of Multifidus
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Rotation toward opposite side and extension
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Innervation of Multifidus
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Dorsal rami of spinal nerves
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Origin of Rectus Capitis Posterior Major
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Spine of C2
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Insertion of Rectus Capitis Posterior Major
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Lateral part of inferior nuchal line of occipital bone
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Action of Rectus Capitis Posterior Major
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Extendes the head and turns the face to the side
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Innervation of Rectus Capitis Posterior Major
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Dorsal ramus of the first cervical spinal nerve
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Origin of Rectus Capitis Posterior Minor
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Posterior arch of C1
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Insertion of Rectus Capitis Posterior Minor
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Medial part of inferior nuchal line of occipital bone
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Action of Rectus Capitis Posterior Minor
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Extends the head
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Innervation of Rectus Capitis Posterior Minor
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Dorsal ramus of the first cervical spinal nerve
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Origin of Oblique Capitis Superior
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Upper surface of transverse process of C1
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Insertion of Oblique Capitis Superior
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Between the superior and inferior nuchal lines of occipital bone
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Action of Oblique Capitis Superior
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Extends the head
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Innervation of Oblique Capitis Superior
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Dorsal ramus of the first cervical spinal nerve
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Origin of Oblique Capitis inferior
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Spinous process of C2 and adjacent part of upper lamina
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Insertion of Oblique Capitis inferior
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Lower and back part of the transverse process of C1
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Action of Oblique Capitis inferior
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Extends the head and turns the head to the same side
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Innervation of Oblique Capitis inferior
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Dorsal ramus of the first cervical spinal nerve
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Origin of Sternocleidomastoid
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Sternal head – top of the manubrium; clavicular head – medial third of clavical
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Insertion of Sternocleidomastoid
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Mastoid process of temporal bone and lateral superior nuchal line
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Action of Sternocleidomastoid
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Unilaterally flexes head to the same side, rotates head to the opposite side; bilaterally flexes the neck, assists in deep inspiration
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Innervation of Sternocleidomastoid
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Spinal accessory
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Origin of Sternohyoid
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Posterior surface of medial end of clavicle, and upper posterior part of the manubrium
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Insertion of Sternohyoid
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Inferior border of body of hyoid
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Action of Sternohyoid
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Depresses the hyoid bone and larynx
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Innervation of Sternohyoid
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Cervical spinal nerves C1- C3
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Origin of Omohyoid – has 2 fleshy bellies
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Superior border of scapula near supra scapular notch
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Insertion of Omohyoid – has 2 fleshy bellies
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Inferior border of hyoid bone
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Action of Omohyoid – has 2 fleshy bellies
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Depresses, retracts and steadies the hyoid bone
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Innervation of Omohyoid – has 2 fleshy bellies
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Cervical spinal nerves C1- C3
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Origin of Thyrohyoid
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Thyroid cartilage of larynx
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Insertion of Thyrohyoid
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Inferior border of greater cornu and body of hyoid bone
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Action of Thyrohyoid
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Elevates larynx, depress hyoid bone
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Innervation of Thyrohyoid
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Cervial spinal nerves C1-C2 vial hypoglossal nerve
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Origin of Sternothyroid
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Posterior surface of the manubrium and costal cartilage of the first rib
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Insertion of Sternothyroid
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Thyroid cartilage of larynx
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Action of Sternothyroid
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Depresses the hyoid bone and larynx
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Innervation of Sternothyroid
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Cervical spinal nerves C1-C3
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Origin of Scalene – Anterior, middle and Posterior
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All Transverse Process (Anter. = C3-C6) (Mid.=axis –C7) (Post.=C4-C6)
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Insertion of Scalene – Anterior, middle and Posterior
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Ant. = Inner border of first rib, mid. =upper surface of first rib, post.= outer surface of second rib
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Action of Scalene – Anterior, middle and Posterior
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All Laterally flexes neck, if neck is stable it assists in elevating 2nd rib. Anterior also rotates heat to opposite side
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Innervation of Scalene – Anterior, middle and Posterior
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All ventral rami (ant=C4-C6) (Mid C3-C8) (Post C6-C8)
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Origin of Deltoid
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Lateral part of clavical, acromion, spine of scapula
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Insertion of Deltoid
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Deltoid tuberosity of humerus
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Action of Deltoid
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Abduction- anterior head (shoulder flexion, horz. Adduction, and internal rotation) post. Head(shoulder extension, horz. Abduct. And external rotation)
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Innervation of Deltoid
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Axillary
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Origin of Pectoralis Major
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Medial part of clavicle, sternum, ribs (2nd to 6th)
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Insertion of Pectoralis Major
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Humerus;lateral lip of intertubercular groove
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Action of Pectoralis Major
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Shoulder adduction, internal rotation, flexion, extension, and horizonal adduction
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Innervation of Pectoralis Major
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Lateral and medial pectoral: Clavicular C5&C6, stenal C7,C8 and T1
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Origin of Subscapularis
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Costal surface of scapula (subscapular fossa)
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Insertion of Subscapularis
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Lesser tubercle of humerus
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Action of Subscapularis
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Internal rotation of shoulder
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Innervation of Subscapularis
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Upper and lower subscapular
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Origin of Coracobrachialis
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Coracoid process
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Insertion of Coracobrachialis
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Medial aspect of humerus, halfway down
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Action of Coracobrachialis
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Shoulder flexion and adduction
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Innervation of Coracobrachialis
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Musculocutaneous
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Origin of Biceps Brachii
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Long head – superior lip of glenoid fossa (supraglenoid tubercle), Short Head coracoids process
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Insertion of Biceps Brachii
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Tuberosity of radius and lacertus fibrosus
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Action of Biceps Brachii
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Elbow flexion and supination, shoulder flexion
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Innervation of Biceps Brachii
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Musculocutaneous
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