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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 6.23

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 6.23

Upper Left Quadrant

Lower Left Quadrant

Lower Right Quadrant

Upper Right Quadrant

1. Rectus abdominis m. and sigmoid colon
2. Inguinal ligament and cecum
3. Sartorius m.
4. Ovarian a., v., and nerve in suspensory ligament of ovary
5. Genitofemoral nerve
6. Gluteus minimus m.
7. Iliopsoas m.
8. Gluteus medius m.
9. Right ureter
10. Ilium

11. Internal iliac v.
12. Superficial fascia
13. Superior gluteal a. and v. in greater sciatic foramen
14. Sigmoid colon
15. Piriformis m.
16. Inferior gluteal a. and v.
17. Second sacral nerve
18. Sacrum

19. Sacrum
20. Sacrum
21. Fifth sacral nerve roots
22. Fourth sacral nerve roots
23. Third sacral nerve roots
24. Anterior sacral plexus
25. Second sacral nerve
26. Piriformis m.
27. Posterior sacroiliac ligament and sacroiliac joint
28. Gluteus maximus m.
29. First sacral nerve
30. Ilium
31. Gluteus medius m.
32. Lumbosacral trunk
33. Gluteus minimus m.
34. Fimbriated end of uterine tube
35. Ovary

36. Obturator nerve
37. Internal iliac a. and v.
38. Left ureter
39. Uterine tube (fallopian)
40. Femoral nerve
41. Round ligament of uterus (ligamentum teres)
42. Iliopsoas m.
43. Descending colon
44. External iliac a.
45. Anterior superior iliac spine
46. Ileum
47. Sigmoid colon
48. Mesentery
49. Inferior epigastric a.
50. Ileum
51. Rectus abdominis m.
52. Uterus
53. Linea alba

This section passes through the rectus abdominis muscles (1, 51), ileum (46, 50), sigmoid colon (14, 47), uterus (52) (first appearance), uterine tube (39), round ligament of the uterus (41), left ovary (35), right greater sciatic foremen (13), and left anterior superior iliac spine (45).

The pelvis is slightly and unintentionally tilted so that the section cuts lower on the right side. This results in the appearance of the greater sciatic foremen (13) and the anterior superior iliac spine (45) in the same section. Note the superior gluteal artery and vein in the greater sciatic foremen (13).

The lumbosacral trunk (32) and the second (25) and third (23) sacral nerves are major components of the sciatic nerve. The sciatic nerve will be constituted in the next section.

The suspensory ligament (4) of the right ovary is identified in this section.

The arrow indicates the path of the lumen of the sigmoid colon.

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