posterior_forearm Flashcards
Brachioradialis ORIGIN
Lateral supracondylar ridge of humerus
Brachioradialis INSERTION
Distal radius
Brachioradialis ACTION
Flexes forearm when forearm in mid-prone position
Brachioradialis NERVE
Radial
Extensor carpi radialis longus ORIGIN
Lateral supracondylar ridge of humerus
Extensor carpi radialis longus INSERTION
Base of 2nd metacarpal
Extensor carpi radialis longus ACTION
Extends and aBducts hand the wrist
Extensor carpi radialis longus NERVE
Radial
Extensor carpi radialis brevis ORIGIN
Lateral epicondyle of humerus
Extensor carpi radialis brevis INSERTION
Base of 3rd metacarpal
Extensor carpi radialis brevis ACTION
Extends and aBducts hand at wrist joint
Extensor carpi radialis brevis NERVE
Radial
Extensor digitorum ORIGIN
Lateral humeral epicondyle of humerus
Extensor digitorum INSERTION
Middle and distal phalanges of 2nd - 5th digits via the extensor expansion
Extensor digitorum ACTION
Extends digits 2-5 at MP, PIP, and DIP joints and extends hand at wrist
Extensor digitorum NERVE
Radial, Deep branch
Extensor carpi ulnaris ORIGIN
Lateral humeral epicondyle
Extensor carpi ulnaris INSERTION
Base of 5th metacarpal
Extensor carpi ulnaris ACTION
Extends and ulnar deviates (adducts) wrist
Extensor carpi ulnaris NERVE
Radial, Deep branch
Aconeus ORIGIN
Lateral humeral epicondyle of humerus
Aconeus INSERTION
Olecranon of ulna
Aconeus ACTION
Extends forearm (assists triceps)
Aconeus NERVE
radial nerve
