"origin: lateral epicondyle of the humerus, annular ligament of the radius"
"insertion: base of 3rd metacarpal on posterior surface with direct relationship with ECRL which inserts into the base of 2nd metacarpal"
"innervation: deep branch of radial nerve, C7, C8"
"action: extension and abduction of the wrist joint; extensor carpi radialis brevis muscle is a prime extensor of the wrist"
"origin: lateral epicondyle of the humerus, annular ligament of the radius"
"insertion: base of 3rd metacarpal on posterior surface with direct relationship with ECRL which inserts into the base of 2nd metacarpal"
"innervation: deep branch of radial nerve, C7, C8"
"action: extension and abduction of the wrist joint; extensor carpi radialis brevis muscle is a prime extensor of the wrist"
"insertion: base of 3rd metacarpal on posterior surface with direct relationship with ECRL which inserts into the base of 2nd metacarpal"
Expected headings
"Summary"
"action: extension and abduction of the wrist joint; extensor carpi radialis brevis muscle is a prime extensor of the wrist"