X CLOSE

Sections of forearm and hand

Transverse section of middle third of hand, partially dissected

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Image #112-5
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Sections of forearm and hand
Transverse section of middle third of hand, partially dissected
The flexor tendons and the interosseous, hypothenar and lumbrical muscles have been removed to a depth of 5 mm. from the surface of the section to illustrate synovial sheaths and fascial planes.
1 . Palmar aponeurosis
2 . Superficial fascia (lobules of fat removed to illustrate vertical septa)
3 . Lumbrical muscle III
4 . Upper pointer: Flexor digitorum superficialis (tendon to fourth finger) Lower pointer: Flexor digitorum profundus muscle (tendon to fourth finger)
5 . Common palmar digital nerve of ulnar nerve
6 . Lumbrical muscle IV
7 . Left pointer: Flexor digitorum profundus muscle (tendon to fifth finger) Right pointer: Flexor digitorum superficialis muscle (tendon to fifth finger)
8 . Proper palmar digital nerve of ulnar nerve
9 . Fascia of opponens digiti minimi muscle
10 . Abductor and flexor digiti minimi muscles
11 . Hypothenar fascia
12 . Metacarpal V
13 . Anterior interosseous muscle III
14 . Dorsal interosseous muscle IV
15 . Left pointer: Common extensor digitorum muscle (tendon to fifth finger) Right pointer: Dorsal fascial of the hand
16 . Anterior interosseous fascia
17 . Anterior interosseous muscle II
18 . Dorsal interosseous muscle III
19 . Dorsal interosseous muscle II
20 . Dorsal interosseous fascia
21 . Anterior interosseous muscle I
22 . Extensor indicis muscle (tendon)
23 . Left pointer: Flexor digitorum superficialis and profundus muscles (tendons within synovial sheaths) Right pointer: Lumbrical muscle II
24 . Common palmar digital nerve of median nerve
25 . Left pointer: Flexor digitorum superficialis (tendon to index finger) Right pointer: Flexor digitorum profundus muscle (tendon to index finger)
26 . Proper palmar digital nerve of median nerve
27 . Lumbrical muscle I
28 . Adductor pollicis muscle
29 . Dorsal interosseous muscle