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46 Cards in this Set
- Front
- Back
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Pectoralis Major
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O: Medial half of clavicle, manubrium and body of sternum, upper six costal cartilages
I: lateral lip of intertubercular groove of humerus Innervation: lateral and medial pectoral nerves Action: Flexes, adducts, and medially rotates arm |
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Pectoralis Minor
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O: Third, fourth, and fifth ribs
I: coracoid process of scapula, Innervation: medial and lateral pectoral nerves Action: depresses scapula, elevates ribs |
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Subclavius
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O: junction of first rib and costal cartilage
I: inferior surface of clavicle Innervation: nerve to subclavius Action: depresses lateral part of clavicle |
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Serratus Anterior
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O: upper eight ribs
I: medial border of scapula Innervation: long thoracic nerve Action: rotates scapula upward, abducts scapula with arm and elevates it above the horizontal |
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Deltoid
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O: lateral third of clavicle, acromion, and spine of scapula
I: deltoid tuberosity of humerus Innervation: axillary nerve Action: abducts, adducts, flexes, extends, and rotates medially and laterally |
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Supraspinatus
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O: supraspinous fossa of scapula
I: superior facet of greater tubercle of humerus Innervation: suprascapular nerve Action: abducts arm |
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Infraspinatus
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O: infraspinous fossa
I: middle facet of greater tubercle of humerus Innervation: suprascapular nerve Action: rotates arm laterally |
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Subscapularis
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O: subscapular fossa
I: lesser tubercle of humerus Innervation: upper and lower subscapular nerves Action: adducts and rotates arm medially |
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Teres Major
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O: dorsal surface of inferior angle of scapula
I: medial lip of intertubercular groove of humerus Innervation: lower subscapular nerve Action: adducts and rotates arm medially |
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Teres Minor
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O: upper portion of lateral border of scapula
I: lower facet of greater tubercle of humerus Innervation: axillary nerve Action: rotates arm laterally |
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Latissimus Dorsi
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O: spines of T7-T12, thoracolumbar fascia, iliac crest, ribs 9-12
I: floor of bicipital groove of humerus Innervation: thoracodorsal nerve Action: adducts, extends, and rotates arm medially |
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Coracobrachialis
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O: coracoid process
I: middle third of medial surface of humerus Innervation: musculocutaneous nerve Action: flexes and adducts arm |
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Biceps Brachii
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O: Long head from supraglenoid tubercle, short head from coracoid process
I: radial tuberosity of radius Innervation: musculocutaneous nerve Action: flexes arm and forearm, supinates forarm |
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Brachialis
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O: lower anterior surface of humerus
I: coronoid process of ulna and ulnar tuberosity Innervation: musculocutaneous nerve Action: flexes forearm |
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Triceps
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O: long head from infragledoid tubercle, lateral head from just superior to radial groove, medial head just inferior to radial groove
I: posterior surface of olecranon of ulna Innervation: radial nerve Action: extends forearm |
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Anconeus
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O: lateral epicondyle of humerus
I: olecranon and upper posterior surface of the ulna Innervation: radial nerve Action: extends forearm |
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Pronator Teres
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O: medial epicondyle and coronoid process of ulna
I: meddle of lateral side of radius Innervation: median nerve Action: pronates and flexes forearm |
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Flexor Carpi Radialis
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O: medial epicondyle of humerus
I: bases of second and third metacarpals Innervation: median nerve Action: flexes forearm, flexes and abducts hand |
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Palmaris Longus
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O: medial epicondyle of humerus
I: flexor retinaculum, palmar aponeurosis Innervation: median nerve Action: flexes forearm and hand |
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Flexor Carpi Ulnaris
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O: medial epicondyle, medial olecranon and posterior border of ulna
I: pisiform, hook of hamate, and base of fifth metacarpal Innervation: Ulnar nerve Action: flexes forearm, flexes and adducts hand |
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Flexor Digitorum Superficialis
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O: medial epicondyle, coronoid process, oblique line of radius
I: middle phalanges of finger Innervation: median nerve Action: flexes proximal interphalageal joints, flexes hand and forearm |
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Flexor Digitorum Profundus
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O: anteromedial surfce of ulna, interosseous membrane
I: middle phalages of finger Innervation: median nerve Action: flexes distal interphalangeal joints and hand |
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Flexor Pollicis Longus
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O: anterior surface of radius, interosseous membrane, coronoid process
I: base of distal phalanx of thumb Innervation: median nerve Action: flexes thumb |
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Pronator Quadratus
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O: anterior surface of distal Ulna
I: anterior surface of distal radius Innervation: median nerve Action: pronates forearm |
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Brachioradialis
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O: lateral supracondylar ridge of humerus
I: base of radial styloid process Innervation: radial nerve Action: flexes forearm |
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Extensor Carpi Radialis Longus
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O: lateral supracondylar ridge of humerus
I: dorsum of base of 2nd metacarpal Innervation: radial nerve Action: extends and abducts hand |
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Extensor Carpi Radialis Brevis
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O: lateral epicondyle of humerus
I: posterior base of 3rd metacarpal Innervation: radial nerve Action: extends and abducts hand |
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Extensor Digitorum
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O: lateral epicondyle of humerus
I: extensor expansion, base of middle and digital phalages Innervation: radial nerve Action: extends fingers and hand |
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Extensor Digiti Minimi
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O: common extensor tendon and interosseous membrane
I: extensor expansion, base of middle and distal phalanges Innervation: radial nerve Action: extends little finger |
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Extensor Carpi Ulnaris
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O: lateral epicondyle and posterior surface of ulna
I: base of 5th metacarpal Innervation: radial nerve Action: extends and adducts hand |
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Supinator
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O: lateral epicondyle, radial collateral and annular ligaments, supinator fossa and crest of ulna
I: lateral side of upper part of radius Innervation: radial nerve Action: supinates forearm |
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Abductor Pollicis Longus
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O: interosseous membrane, middle third of posterior surfaces of radius and ulna
I: lateral surface of base of first metacarpal Innervation: radial nerve Action: abducts thumb and hand |
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Extensor Pollicis Longus
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O: interosseous membrane and middle third of posterior surface of ulna
I: base of distal phalanx of thumb Innervation: radial nerve Action: extends distal phalanx of thumb and abducts hand |
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Extensor Pollicis Brevis
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O: interosseous membrane and posterior surface of middle third of radius
I: base of proximal phalanx of thumb Innervation: radial nerve Action: extends proximal phalanx of thumb and abducts hand |
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Extensor Indicis
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O: posterior surface of ulna and interosseous membrane
I: extensor expansion of index finger Innervation: radial nerve Action: extends index finger |
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Abductor Pollicis Brevis
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O: flexor retinaculum, scaphoid, and trapezium
I: lateral side of base of proximal phalanx of thumb Innervation: Median nerve Action: abducts thumb |
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Flexor pollicis brevis
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O: flexor retinaculum and trapezium
I: base of proximal phalanx of thumb Innervation: median nerve Action: flexes thumb |
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Opponens pollicis
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O: flexor retinaculum and trapezium
I: lateral side of first metacarpal Innervation: median nerve Action: opposes thumb to other digits |
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Adductor Pollicis
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O: oblique head from capitate and bases of second and third metacarpals, transverse head from palmar surface of third metacarpal
I: medial side of base of proximal phalanx of the thumb Innervation: ulnar nerve Action: adducts thumb |
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Palmaris Brevis
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O: medial side of flexor retinaculum, palmar aponeurosis
I: skin of medial side of palm Innervation: ulnar nerve Action: wrinkles skin on medial side of palm |
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Abductor Digiti Minimi
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O: pisiform and tendon of flexor carpi ulnaris
I: medial side of base of proximal phanlanx of little finger Innervation: ulnar nerve Action: abducts little finger |
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Flexor digiti minimi brevis
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O: flexor retinaculum and hook of hamate
I: medial side of base of proximal phalanx of little finger Innervation: ulnar nerve Action: flexes proximal phalanx of little finger |
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Opponens digiti minimi
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O: flexor retinaculum and hook of hamate
I: medial side of fifth metacarpal Innervation: ulnar nerve Action: opposes little finger |
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Lumbricals (4)
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O: lateral side of tendons of flexor digitorum profundus
I: lateral side of extensor exspansion Innervation: lateral 2 my the median nerve, medial 2 by the ulnar nerve Action: flex metacarpophalangeal joints and extend interphalangeal joints |
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Dorsal interosseos (4)
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O: adjacent sides of metacarpal bones
I: lateral sides of bases of proximal phalanges, exensor expansion Innervation: ulnar nerve Action: abduct fingers, flex metacarpophalangeal joints, extend interphalangeal joints |
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Palmar interosseos (3)
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O: medial side of second metacarpal, lateral side of fourth and fifth metacarpals
I: bases of proximal phalanges in same sides as their origins, extensor expansion Innervation: Unlar nerve Action: adduct fingers, flex metacarpophalangeal joints, extend interphalangeal joints |
