Dorsal aspect of right forearm

Nerve supply to extensor carpi ulnaris muscle

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Image #106-6

Dorsal aspect of right forearm

Nerve supply to extensor carpi ulnaris muscle

The muscle has been cut from its origin and pulled downward. The brachioradialis and extensor carpi radialis longus muscles have been removed.

1. Brachialis muscle
2. Lateral epicondyle of humerus
3. Recurrent radial artery
4. Anconeus muscle
5. Recurrent interosseous artery
6. Extensor carpi ulnaris muscle (retracted)
7. Ulna
8. Extensor digiti minimi muscle
9. Dorsal interosseous artery
10. Superficial branch of radial nerve (cut)
11. Lateral antebrachial cutaneous nerve (cut)
12. Deep branch of radial nerve
13. Common extensor digitorum muscle
14. Extensor carpi radialis brevis muscle
15. Muscular branches of radial nerve (to extensor carpi ulnaris muscle