Muscle of the hand. (action, origin, insertion, location, and nerve)
extensor digitorum group
Action: extends fingers, wrist. Origin: lateral epicondyle of humerus. Insertion: distal, middle phalanges of digits 2-5. Nerve: radial
extensor carpi radialis group
Action: extends, abducts hand at wrist. Origin: lateral supracondylar ridge of humerus. Insertion: 2nd, 3rd metacarpal. Nerve: radial
flexor pollicis longus
Action: flexes distal phalanx of thumb. Origin: radius, interosseus membrane. Insertion: distal phalanx of thumb. Location: inferior, lateral to flexor digitorum superficialis. Nerve: median
flexor carpi radialis
Action: flexes, abducts hand at wrist Origin:medial epicondyle of humerus. Insertion: 2nd & 3rd metacarpals. Location: medial, inferior to pronator teres; medial to brachioradialis. Nerve: median
flexor carpi ulnaris
Action: flexes, adducts hand at wrist. Origin: medial epicondyle of humerus, ulna. Insertion: pisiform, hamate, 5th metacarpal. Nerve :median
extensor carpi ulnaris
Action:extends, adducts wrist. Origin:lateral epicondyle of humerus, ulna. Insertion: 5th metacarpal. Location:lateral to flexor carpi ulnaris. Nerve: radial
flexor digitorum
Action:flexes hand, phalanges of each finger. Origin: medial epicondyle of humerus, ulnar coronoid process, radius. Insertion: middle, distal phalanes of digits 2-5. Location: deep to tendons of flexor carpi radialis & flexor carpi ulnaris. Nerve: median