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Anatomy Atlases: Atlas of Human Anatomy in Cross Section: Section 4. Upper Limb

Atlas of Human Anatomy in Cross Section: Section 4. Upper Limb

Plate 4.36

Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Jean J. Jew, M.D., and Paul C. Reimann, B.S.
Peer Review Status: Externally Peer Reviewed

Plate 4.36

Upper Left Quadrant

Lower Left Quadrant

Lower Right Quadrant

Upper Right Quadrant

1. First and second lumbrical mm.
2. Tendon m. flexor pollicis longus
3. Proximal phalanx, pollex

4. First dorsal interosseous m.
5. Tendons mm. long digital flexors
6. Second metacarpal head
7. Palmar interosseous m.
8. Tendon m. extensor digitorum communis
9. Tendon m. extensor indicts proprius
10. Dorsal interosseous m.
11. Dorsal metacarpal a.
12. Tendon m. extensor digitorum communis

13. Fourth metacarpal head
14. Dorsal metacarpal a.
15. Interosseous m. inserting into dorsal fibrous extensor expansion
16. Tendon m. extensor digitorum communis
17. Palmar interosseous m., insertion
18. Joint space, metacarpophalangeal
19. Fourth metacarpal head
20. Third lumbrical m.
21. Tendons mm. long digital flexors
22. Fibrous digital sheath
23. Tendon m. extensor digiti minimi
24. Proximal phalanx, fifth digit

25. Fibrous digital sheath
26. Tendons mm. Long digital flexors
27. Proper digital o.
28. Common digital o.
29. Tendon m. flexor digitorum superficialis
30. Tendon m. flexor digitorum profundus

This section illustrates fibrous digital sheaths (22, 25) containing the tendons of flexor digitorum superficialis and profundus and insertions of a palmer interosseous muscle into the dorsal extensor expansion.

In the section through the thumb, the tendon of flexor pollicis longus (2) can be identified. The tendons of extensor digitorum communis (8, 12, 16) are seen on or near the dorsal surface of the hand.

Common (28) and proper (27) digital and dorsal metacarpal (11, 14) arteries are identified.

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