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Anatomy Atlases: Atlas of Human Anatomy in Cross Section: Section 6: Pelvis, Perineum, Hip, and Upper Thigh

Atlas of Human Anatomy in Cross Section: Section 6. Pelvis, Perineum, Hip, and Upper Thigh

Plate 6.32

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 6.32

Upper Left Quadrant

Lower Left Quadrant

Lower Right Quadrant

Upper Right Quadrant

1. Mons pubis
2. Corpus cavernosum clitoris
3. Adductor magnus m.
4. Bulb of vestibule and greater vestibular gland
5. Ligamentum teres (round ligament) of uterus
6. Adductor brevis m.
7. Sartorius m.
8. Pectineus m.
9. Rectus femoris m.
10. Tensor fascia lata m.
11. Vastus lateralis m.
12. Obturator a., v., and nerve (posterior ramus)
13. Vastus intermedius m.
14. Adductor minimus m.
15. Fascia lata and vastus medialis m.
16. Vastus lateralis m.

17. Medial femoral circumflex a. and v. and quadratus femoris m.
18. Pubic ramus and ischiocavernosus m.
19. Sciatic nerve
20. Posterior (femoral) cutaneous nerve (of thigh)
21. Gluteus maximus m.
22. Uterovaginal venous plexus
23. Ischiorectal fossa
24. Internal anal sphincter
25. Perineal body

26. Anus
27. Sphincter ani m.
28. Inferior rectal a. and v. and ischiocavernosus m.
29. Gluteus maximus m.
30. Sciatic nerve
31. Pudendal blood vessels
32. Femur
33. Pubic ramus

34. Iliopsoas m.
35. Lateral femoral circumflex a. and v. and femoral nerve brs.
36. Femoral nerve, br. to rectus femoris m.
37. Femoral a. and v.
38. Obturator externus m.
39. Saphenous v.
40. Ligamentum teres (round ligament) of uterus
41. Vagina
42. Urethra
43. Corpus cavernosum clitoris
44. Body of clitoris and septum corpora cavernosa

This section passes through the mons pubis (1), corpora cavernosa of the clitoris (2, 43), urethra (42), vagina (41), ischiocavernosus muscles (18, 28), femora (32), and anus (26).

The clitoris is located posterior to the pubic symphysis at the anterior end of the pudendal rim. It consists of a body, two crura, and a glans. The body is not free, like that of the penis, but is embedded in the connective tissue of the vulva. The body of the organ (44) is formed by the fusion of the two corpora cavernosa (2, 43), which differ from those of the penis only in size. It extends from the pubic arch anteriorly and posteriorly, being curved, and is about 2 to 2.5 cm in length. Unlike the penis, the third cavernous body is missing from the clitoris. At the inferior border of the pubis the two corpora cavernosa separate, bend sharply caudally, laterally, and dorsally, and follow the inferior borders of the inferior rami of the pubic bones (18, 33). These are the crura (legs) and they are covered by ischiocavernosus muscles (18, 28). A glans is attached to the distal end of the fused corpora cavernosa.

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