Forearm muscles origin and insertion Flashcards
brachioradialis
O: lateral ridge at the distal end of the humerus
I: base of the radial styloid process
pronator teres
O: medial epicondyle of the humerus
I: midshaft of the radius
pronator quadratus
O: distal 1/4 of the anterior surface of the ulna
I: distal 1/4 of the anterior surface of the radius
supinator
deep muscle in posterior elbow
O: lateral epicondyle of the humerus; proximal ulna
I: proximal end of the radius
flexor carpi radialis
O: medial epicondyle of the humerus
I: base of metacarpals II and III
Palmaris longus
O: medial epicondyle of the humerus
I: palmar aponeurosis; skin and fascia of the palm
Flexor carpi ulnaris
O: medial epicondyle of the humerus; olecranon and posterior surface of the ulna
I: base of metacarpal V; pisiform and hamate bones
flexor digitorum superficialis
O: medial epicondyle of the humerus
I: middle phalanges of fingers II-V
flexor pollicis longus
O: Anterior surface of radius; interosseous membrane
I: distal phalanx of thumb
flexor digitorum profundus
O: anteromedial surface of the ulna, interosseous membrane, coronoid process
I: distal phalanges of fingers II-V
extensor carpi radialis longus
O: lateral supracondylar ridge of humerus
I: base of metacarpal II
extensor carpi radialis brevis
O: lateral epicondyle of the humerus
I: base of metacarpal III
extensor digitorum
O: lateral epicondyle of the humerus
I: 4 tendons into the distal phalanges of ii-v
extensor carpi ulnaris
O: lateral epicondyle of the humerus; posterior border of the ulna
I: base of metacarpal V
extensor pollicis longus
O: dorsal shaft of ulna and radius; interosseous membrane
I: base of distal phalanx of thumb (longus)
