Lab Exam #3 Muscles Of The Human Humerus, Forearm

Front 1

triceps brachii

Back 1

origin- 3 glenoid cavity, posterior humerus, radial groove of posterior humerus
insertion- olecranon process of ulna
action-forearm extensor

Front 2

anconeus

Back 2

origin- epicondyle of humerus
insertion- olecran process of ulna
action- extend elbow

Front 3

biceps brachii

Back 3

origin- 2 coracoid process, supraglenoid tuberosity of scapula
insertion- radial tuberosity
action- flexion of elbow, supination of forearm

Front 4

brachioradialis

Back 4

origin- distal end of humerus
insertion- styloid process of radius
action- synergist in forearm flexion

Front 5

brachialis

Back 5

origin- distal anterior humerus
insertion- coronoid process of ulna
action- flexor in forearm

Front 6

pronator teres

Back 6

origin- medial epicondyle of humerus
insertion- mid shaft of radius
action- pronate forearm

Front 7

flexor carpi radialis

Back 7

origin- medial epicondyle of humerus
insertion- metacarpals 2 3
action- flexes wrist, abducts hand

Front 8

palmaris longus

Back 8

origin- medial epicondyle of humerus
insertion- palmar aponeurosis
action- tenses skin fascia of palm

Front 9

flexor carpi ulnaris

Back 9

origin- medial epicondyle of humerus, olecranon process of ulna
insertion- metacarpal 5
action- adducts hand

Front 10

flexor digitorum superficialis

Back 10

origin- medial epicondyle of humerus, coronoid process of ulna
insertion- phalanges of fingers 2-5
action- flexes wrist and 2-5

Front 11

flexor pollicis longus

Back 11

origin-anterior surface of radius
insertion- distal phalanx of thumb
action- flexes thumb

Front 12

flexor digitorum profundus

Back 12

origin-anteromedial surface of ulna
insertion- distal phalanges of 2-5
action- flexes distal phalanges

Front 13

pronator quadratus

Back 13

origin- distal portion of anterior ulnar surface
insertion- anterior of radius, distal end
action- pronates forearm

Front 14

extensor carpi radialis longus

Back 14

origin- supracondylar ridge of humerus
insertion- metacarpal 2
action- extends abducts wrist

Front 15

extensor carpi radialis brevis

Back 15

origin- lateral epicondyle of humerus
insertion- meta carpal 3
action- extends and abducts wrist

Front 16

extensor digitorum

Back 16

origin- lateral epicondyle of humerus
insertion- four tendons of distal phalanges 2-5
action- prime mover of finger extension

Front 17

extensor carpi ulnaris

Back 17

origin- lateral epicondyle of humerus, posterior border of ulna
insertion- metacarpal 5
action- extends adducts wrist

Front 18

extensor pollicis longus and brevis

Back 18

origin- dorsal shaft of ulna and radius
insertion- base of distal phalanx thumb
action- extends thumb

Front 19

abductor pollicis longus

Back 19

origin- posterior surface of radius and ulna
insertion- metacarpal 1 and trapezium
action- abducts and extends thumb

Front 20

supinator

Back 20

origin- later epicondyle of humerus, proximal ulna
insertion- proximal end of radius
action- supinate forearm