Posterior and Anterior Forearm Flashcards
Which nerve innervates the posterior forearm?
Radial nerve. Once it passes the supinator, it becomes the posterior interosseous nerve
What are the muscles in the superficial posterior forearm?
Extensor carpi radialis longus Extensor carpi radialis brevis Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris Aconeous
What is the origin and insertion of extensor carpi radialis longus?
Lateral supracondylar ridge and insertion is at the base of the second metacarpal
Which muscles arise from the common extensor tendon at the lateral epicondyle?
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris
Which muscles arises from the lateral supracondylar ridge?
extensor carpi radialis longus and brachioradialis
Which nerve and artery lies between the brachioradialis and extensor carpi radialis longus?
The radial artery and superfical radial nerve
What is the origin and insertion of the anconeus?
Origin is the lateral epicondyle and insertion is the olecranon and posterior surface of the ulna
(goes from lateral to medial)
What is the function of the aconeus?
Accessory extension of forearm
Which muscles are responsible for extension and abduction of the hand at the wrist joint?
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
What are the deep muscles of the posterior forearm?
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis
Extensory indicis
Which muscles of the deep posterior forearm originate on the ulna (from proximal to distal)?
Abductor pollicis longus
Extensor pollicis longus
Extensor indicis
Which muscle of the deep posterior forearm originates at the radius?
Extensor pollicis brevis
Which nerves innervates the deep muscles of the posterior forearm?
Radial nerve (posterior interosseous nerve)
