Dorsal aspect of right forearm

Origins of deep layer of extensor muscles

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Image #108-6
Bassett ImageDiagram Image
Legend Image
Dorsal aspect of right forearm
Origins of deep layer of extensor muscles
1 . Deep branch of radial nerve
2 . Supinator muscle (insertion)
3 . Dorsal interosseous artery
4 . Abductor pollicis longus muscle (area of origin)
5 . Radius
6 . Antebrachial interosseous membrane
7 . Extensor carpi radialis brevis muscle (tendon)
8 . Extensor pollicis brevis muscle
9 . Anterior interosseous artery
10 . Dorsal interosseous nerve (terminal part)
11 . Compartment for common extensor digitorum muscle and extensor indicis muscle
12 . Dorsal carpal ligament
13 . Compartment for extensor digiti minimi muscle
14 . Compartment for extensor carpi ulnaris muscle
15 . Ulna
16 . Area of origin of extensor indicis muscle
17 . Area of origin of extensor pollicis longus muscle