"origin: posterior surface of the ulna (distal to extensor pollicis longus)"
"insertion: extensor hood of 2nd digit"
"action: extends 2nd digit"
"arterial supply: posterior interosseous artery"
"arterial supply: posterior interosseous artery"
"innervation: posterior interosseous nerve (C7 and C8), a continuation of the deep branch of the radial nerve (C7, C8)"
"innervation: posterior interosseous nerve (C7 and C8), a continuation of the deep branch of the radial nerve (C7, C8)"
Expected headings
"Summary"