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29 Cards in this Set

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  • Back
Deltoid
Anterior Part
Origin: Lateral third of clavicle
Insertion: Deltoid tuberosity of humerus
Innervation: Axillary n. (C5+6)
Main Action: Anterior part: flexes and medially rotates arm at shoulder
Deltoid
Middle part
Origin: Acromion
Insertion: Deltoid tuberosity of humerus
Innervation: Axillary n. (C5+6)
Main Action: abducts arm at shoulder
Deltoid
Posterior part
Origin: Spine of scapula
Insertion: Deltoid tuberosity of humerus
Innervation: Axillary n. (C5+6)
Main Action: extends and laterally rotates arm at shoulder
Subscapularis (rotator cuff muscle)
Origin: Subscapular fossa of scapula
Insertion: Lesser tubercle of humerus
Innervation:Upper and lower subscapular n.
Main Action: medially rotates arm at shoulder and adducts it; helps hold humeral head in glenoid cavity
Supraspinatus (rotator cuff muscle)
Origin: Supraspinatus fossa
Insertion: Greater tubercle of humerus
Innervation: Suprascapular n.
Main Action: Helps deltoid abduct arm at shoulder. Acts as rotator cuff muscle
Infraspinatus (rotator cuff muscle)
Origin: Infraspinatus fossa of scapula
Insertion: Greater tubercles of humerus
Innervation: Suprascapular
Main Action: Laterally rotates arm at shoulders helps hold head in glenoid cavity
Teres minor (rotator cuff muscle)
Origin: Lateral border of scapula, upper 2/3
Insertion: Greater tubercle of humerus
Innervation: Axillary n. (C5+6)
Main Action: Laterally rotates arm at shoulder; helps to hold head in glenoid gavity
Teres major
Origin: Dorsal surface of inferior angle of scapula, lower 1/3
Insertion: Medial lip of inter tubercular groove of humerus
Innervation: Lower subscapular n. (C5, 6)
Main Action: Adducts arm and medially rotates shoulder
Coracobrachialis
Origin: Tip of coracoid process of scapula
Insertion: Middle third of medial surface of humerus
Innervation: Musculocutaneous n. (C5, 6)
Main Action: Helps to flex and adduct arm at shoulder
Triceps brachialis (long head)
Origin: Infraglenoid tubercle of scapula
Insertion: Proximal end of olecranon of ulna and fascia of forearm
Innervation: Radial n. (C6,7,8)
Main Action: Active in extension against resistance; may help stabilize shoulder joint and assist in arm adduction
Triceps brachialis (lateral head)
Origin: Posterior surface of humerus
Insertion: Proximal end of olecranon of ulna and fascia of forearm
Innervation: Radial n. (C6,7,8)
Main Action: Active in extension against resistance
Triceps brachialis (medial head)
Origin: Posterior surface of humerus; inferior to radial groove
Insertion:Proximal end of olecranon of ulna and fascia of forearm
Innervation: Radial n. (C6,7,8)
Main Action: Powerful forearm extensor (prime mover)
Anconeous
Origin: Lateral epicondyle of humerus
Insertion: Lateral surface of olecranon and superior part of posterior surface of ulna
Innervation: Radial n. (C7-T1)
Main Action: Assists triceps in extending elbow
Brachialis
Origin: Distal half of anterior humerus
Insertion: Coronoid process and tuberosity of ulna
Innervation: Musculocutaneous n. (C5+6)
Main Action: Flexes forearm at elbow in all positions
Brachioradialis
Origin: Lateral supracondylar ridge of humerus
Insertion: Lateral surface of distal end of radius
Innervation: Radial n. (C5,6,7)
Main Action: Flexes forearm at elbow
Supinator
Origin: Lateral epicondyle of humerus; radial collateral and anular ligaments; crest of ulna
Insertion: Lateral, posterior and anterior surfaces of proximal third of radius
Innervation: Radial n. (deep branch) (C7,8)
Main Action: Supinates forearm
Pronator teres
Origin:Medial epicondyle of humerus and Coronoid process of ulna
Insertion: Middle of lateral surface of radius
Innervation: Median n. (C 6,7)
Main Action: Pronates forearm and flexes elbow
Pronator quadratus
Origin: Distal anterior surface of ulna
Insertion: Distal anterior surface of radius
Innervation: Median n. (anterior interosseous) (C8,T1)
Main Action: Pronates forearm
Palmaris longus
Origin: Medial epicondyle of humerus
Insertion: Palmar aponeurosis (fascia of palm)
Innervation: Median nerve (C7, 8)
Main Action: Flexes hand at wrist; tightens palmar aponeurosis
Flexor carpi ulnaris
Origin: Humeral head: medial epicondyle of humerus Ulnar head: olecranon of ulna
Insertion: Pisiform bone, hook of hamate bone and fifth metacarpal bone
Innervation: ulnar nerve (C7,8)
Main Action: Flexes hand at wrist and adducts it
Flexor carpi radialis
Origin: Medial epicondyle of humerus
Insertion: Base of second metacarpal bone
Innervation: Median nerve (C6,7)
Main Action: Flexes and abducts hand at wrist
Flexor digitorum superficialis
Origin: Humeroulnar head: medial epicondyle of humerus. Radial head: superior anterior radius
Insertion: Bodies of middle phalanges of medial four digits
Innervation: Median (C7,8, T1)
Main Action: Flexes middle phalanges of medial four digits
Flexor pollicis longus
Origin: Anterior surface of radius and adjacent interosseus membrane
Insertion: Base of distal phalanx of thumb
Innervation: Median nerve (anterior interosseous)
Main Action: Flexes phalanges of first digit (thumb)
Flexor digitorum profundus
Origin: Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
Insertion: Bases of distal phalanges of medial four digits
Innervation: medial part: Ulnar n. (C8, T1) Lateral part: median n. (C8, T1)
Main Action: Flexes distal phalanges of medial four digits: assist with flexion of wrist
Extensor carpi radialis longus
Origin: Lateral supracondylar ridge of humerus
Insertion: Base of second metacarpal bone
Innervation: Radial nerve (C6,7)
Main Action: Extends and abducts hand at wrist
Extensor carpi radialis brevis
Origin: Lateral epicondyle of humerus
Insertion: Base of third metacarpal bone
Innervation: Radial nerve (deep branch)
Main Action: Extends and abducts hand at wrist
Extensor carpi ulnaris
Origin: Lateral epicondyle of humerus and posterior ulna
Insertion: Base of fifth metacarpal bone
Innervation: Radial nerve (posterior interosseous)
Main Action: Extends and adducts hand at wrist
Extensor digitorum
Origin: Lateral epicondyle of humerus
Insertion: Extensor expansions of medial four digits
Innervation: Radial nerve (posterior interosseous)
Main Action: Extends medial four digits at metacarpophalangeal joints; extends hand at wrist joint
Biceps Brachii
Origin: Short head: coracoid process of scapula
Long head: Supraglenoid tubercle of scapula
Insertion: Tuberosity of radius and fascia of forearm via biciptial aponeurosis
Innervation: Musculocutaneous nerve (C5,6)
Main Action: Flexes forearm at elbow, supinates flexed forearm