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

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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

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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