University:
Kentucky State University
Course:
BIO 301 | Human Anatomy
Academic year:

2023
Views:

30

Pages:

3
Author:

pravitate8aj9

Muscles of the posterior compartment of the forearm • Note: all the pictures are a posterior view of the arm except for the first one, it is an anterior view. They’re all pictures of the left arm. Muscle name Origin Insertion Action Brachioradialis (Lateral) Lateral supracondylar ridge of the humerus Styloid process of radius Restore midprone position Extensor carpi radialis longus (Lateral) Lateral supracondylar ridge of the humerus 2nd metacarpal Wrist extension Radial nerve Extensor carpi radialis brevis(superficial) CEO (common extension origin) =Lateral epicondyle of the humerus 3rd metacarpal Wrist extension Radial nerve Middle and distal phalanx of medial 4 fingers by extensor expansion Extension of medial 4 fingers Radial nerve CEO Extensor digitorum(superficial) Nerve supply Radial nerve A picture of the muscle Middle and distal phalanx of little finger by extensor expansion Extension of joints of little finger Radial nerve Extensor carpi ulnaris CEO (superficial) 5th metacarpal Wrist extension Radial nerve Anconeus(superficial) CEO Olecranon process Elbow extension Radial nerve 1st metacarpal Extension and abduction of thumb Deep radial nerve Extensor digiti minimi (superficial) Abductor pollicis longus(deep) CEO Radius and ulna Extensor pollicis brevis(deep) Radius Proximal phalanx of thumb Thumb extension Deep radial nerve Extensor pollicis longus(deep) Ulna (posterior face) Distal phalanx of thumb Thumb extension Deep radial nerve Extensor indicis(deep) Ulna (posterior surface) Extensor expansion of index finger Extension of index finger joints Deep radial nerve Supinator(deep) CEO, ulna, annular ligaments Neck and upper ¼ of radius Forearm supination Deep radial nerve