Myology of forearm Flashcards
Brachialis
O - distal half of anterior surface of humerus
I - tuberosity and coronoid process of the ulna
A - flex the elbow
Brachioradialis
O - proximal two-thirds of the lateral supracondylar ridge of humerus
I - styloid process of radius
A - flex the elbow, assist in supination and pronation
Extensor digitorum
O - lateral epicondyle of humerus
I - bases of middle and distal phalanges of 2nd - 5th fingers
A - extend the 2nd - 5th fingers, assist to extend the wrist
Extensor carpi radialis longus
O - distal one-thirds of lateral supracondylar ringe of humerus
I - base of second metacarpal
A - extend the wrist, abduct the wrist
Extensor carpi radialis brevis
O - lateral epicondyle of humerus
I - base of third metacarpal
A - extend and abduct the wrist
Extensor carpi ulnaris
O - lateral epicondyle of humerus
I - base of 5th metacarpal
A - extend and adduct the wrist
Extensor indicis
O - posterior surface of distal shaft of ulna and interosseos membrane
I - tendon of extensor digitorum at the level of second metacarpal
A - extend and adduct the 2nd finger
Flexor digitorum superficialis
O - medial epicondyle of humerus, coronoid process of ulna
I - sides of middle phalanges of 2nd-5th fingers
A - flex the wrist and 2nd-5th fingers
Flexor carpi ulnaris
O - HUMERAL HEAD: medial epicondyle of humerus
ULNAR HEAD: proximal two-thirds of posterior surface of ulna
I - pisiform, hookof the hamate and base of fifth metacarpal
A - flex the wrist, adduct the wrist
Flexor carpi radialis
O - medial epicondyle of humerus
I - base of 2nd and 3rd metacarpals
A - flex and abduct the wrist
Palmaris longus
O - medial epicondyle
I - flexor retinaculum and palmar aponeurosis
A - flex the wrist
Radial and Ulnar arteries
RADIALIS: Place the fingers laterally
from the M. Flexor carpi radialis
tendon. Feel the pulse
of the artery
ULNARIS: Place the fingers medially of the M. Palmaris longus tendon. Feel the pulse of the artery
