Sections of forearm and hand

Sagittal section of right middle finger, medial view

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Image #111-6

Sections of forearm and hand

Sagittal section of right middle finger, medial view

1. Flexor digitorum superficialis (tendon cut off in synovial sheath)
2. Phalanx I
3. Common extensor digitorum muscle (insertion of tendon into base of second phalanx)
4. Flexor digitorum superficialis (insertion of tendon into shaft of second phalanx)
5. Phalanx II
6. Common extensor digitorum muscle (insertion of tendon into base of terminal phalanx)
7. Digital joint (distal interphalangeal joint)
8. Hidden margin of nail
9. Vallum of nail
10. Body of nail (stratum corneum)
11. Body of nail (stratum germinativum)
12. Free margin of nail
13. Matrix of nail
14. Phalanx I
15. Flexor digitorum profundus muscle (insertion of tendon into third phalanx)
16. Anterior accessory ligament
17. Flexor digitorum profundus muscle (tendon cut off in synovial sheath)
18. Anterior accessory ligament
19. Vinculum longum (cut off)
20. Corium (dermis)
21. Epidermis (stratum germinativum)
22. Epidermis (stratum corneum)
23. Tendon of digital sheath (internal surface)