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Bassett Collection of Stereoscopic Images of Human Anatomy

Volar aspect of right hand

Nerve supply to second lumbrical muscle, close-up view

Image #104-2

KEYWORDS: Hand and fingers, Neuralnetwork, Vasculature.

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Volar aspect of right hand
Nerve supply to second lumbrical muscle, close-up view
The flexor tendons and lumbrical muscles of the third, fourth and fifth fingers have been retracted medially. The second lumbrical muscle (5) has been dissected. Its nerve (4) in this instance is a branch of the deep volar branch of the ulnar nerve which reaches the muscle after passing through the adductor pollicis muscle. Usually the second lumbrical receives its nerve supply from the median nerve.
1 . Lumbrical muscle I
2 . Flexor digitorum superficialis (tendon to index finger)
3 . Deep transverse metacarpal ligament
4 . Muscular branch of ulnar nerve (to lumbrical muscle II)
5 . Lumbrical muscle II
6 . Flexor digitorum superficialis (tendon to third finger)
7 . Lumbrical muscle III (retracted medially)
8 . Flexor digitorum superficialis (tendon to fourth finger)
9 . Lumbrical muscle IV (upper pointer on accessory muscular slip to ulnar side of fourth finger)
10 . Adductor pollicis muscle (transverse head)
11 . Groove for tendon of flexor pollicis longus muscle
12 . Muscular branches of median nerve (to lumbrical muscle I)
13 . Muscular branch of ulnar nerve (to flexor pollicis brevis muscle)
14 . Fascia over adductor pollicis muscle (partially resected)
15 . Branches of anterior metacarpal artery III
16 . Anterior interosseous fascia
17 . Ulnar artery
18 . Deep anterior branch ulnar artery
19 . Anterior metacarpal artery IV
20 . Muscular branch of ulnar nerve (to lumbrical muscle III)
21 . Opponens digiti minimi muscle
22 . Proper palmar digital artery