Brachialis (action, origin, insertion)
Flexes elbow, halfway down humerus, proximal ulna
Brachioradialis
flex elbow, assist to pronate supinate the forearm proximal 2/3 of the lateral supracondylar ridge of humerusstyloid process of radius radial c5,6
extensor carpi ulnaris
extends and adducts wristcommon extensor tendon from the lateral epicondyle of humerus, base of 5th metacarpal, radial c6, 7, 8
extensor digitorum
extends 2nd-5th fingersextends wrist, common extensor tendon from lateral epicondyle of humerus base of middle and distal phalanges of 2nd - 5th radial c6, 7, 8
Anconeus
extend elbow, lateral epicondyle of humerus, olecranon process and posterior proximal surface of ulna radial c7,8
flexor carpi radialis
flex wrist, assist elblow flexion, abducts wristcommon flexor tendon from medial epicondyle of humerus bases of 2nd & 3rd metacarpals median c6,7,8
palmaris longus
tenses palmar fascia and flexes wristcommon flexor tendon from medial epicondyle of humerusflexor retinacolum and palmar aponeurosis median c6, 7, 8 , t1
flexor carpi ulnaris
Flexes and adducts wrist, humeral head common flexor tendon, ulnar head posterior 2/3 of ulnapisiform, hook of hamate, and base of 5th metacarpalulnar c7, 8, t1
flexor digitorum superficialis
flexes wrist and middle phalanges of fingers 2-5
flexor digitorum profundus
flexes distal interphalangeal joints anterior and medial surfaces of proximal 3/4 of ulna, bases of distal phalanges
pronator teres
pronates forearm, common flexor tendon, middle of lateral surface of radius
pronator quadratus
pronates forearm, medial ant. surface of distal ulna, lateral ant. surface of distal radiusmedian c7,8,t1
supinator
supinates forearm, ant. lateral surface of prox. 1/3 radial shaft
dorsal interossei action
Abduction of toes 2-4 at MTP jointFlexion of toes 2-4 at MTP jointsExtension of toes 2-4 at IP joints
Palmar Interossei
adduct fingers, base of 1st 2nd 4th and 5th, base of prox. phalanx of related finger
lumbricals action
Flexion of toes 2-5 at MTP jointsExtension of toes 2-5 at IP joints
adductor pollicis
adducts thumb, ulnar nerve 2nd 3rd metacarpals
flexor pollicis brevis
flexes thumb, base of prox. phalanx of thumb