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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 6.3 Pelvis, Perineum, Hip, and Upper Thigh: Male

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 6.3

Upper Left Quadrant

Lower Left Quadrant

Lower Right Quadrant

Upper Right Quadrant

1. Median umbilical ligament
2. Lateral umbilical ligament
3. Ileum
4. Inferior epigastric a. and vv.
5. Ileum
6. Peritoneal cavity
7. Testicular a. and v.
8. Greater omentum (last appearance) and ascending colon
9. Transversus abdominis m.
10. Internal abdominal oblique m.
11. External abdominal oblique m.
12. Ureter
13. External spermatic nerve (genitofemoral nerve, genital br.)
14. Ilioinguinal nerve
15. Genitofemoral nerve, femoral branch (lumboinguinals)
16. Median sacral a.

17. Superior gluteal v.
18. Iliacus m.
19. Common iliac v.
20. Femoral nerve
21. Sympathetic trunk
22. Gluteus medius m.
23. Fourth lumbar nerve
24. Anterior sacroiliac ligament
25. Obturator nerve
26. Superficial fascia (panniculus adiposus)
27. Gluteus maximus m. (first appearance)
28. Fifth lumbar nerve
29. Fifth lumbar vertebral, fibrocartilage
30. Iliocostalis lumborum m. tendon
31. Thoracolumbar fascia, lumbar part
32. Internal vertebral arterial and venous plexus
33. Filum terminalis and nerve roots
34. Spinous process, fifth lumbar vertebra, and interspinal ligament

35. Vertebral arch, fifth lumbar vertebra
36. Intervertebral fibrocartilage, fifth lumbar vertebra
37. Multifidus and iliocostalis lumborum mm.
38. Ligamentum flavum and first sacral nerve
39. Os ilium
40. Sacrum, lateral part
41. Gluteus maximus m.
42. Fifth lumbar nerve
43. Superficial fascia (panniculus adiposus)
44. Gluteus medius m.
45. Common iliac v.
46. Femoral nerve
47. Gluteus minimus m. (first appearance)
48. Psoas major m.
49. Descending colon

50. Sympathetic trunk
51. Os ilium, anterior superior spine
52. Common iliac a., at bifurcation
53. Ureter
54. Iliohypogastric nerve
55. Epiploic appendix (mesenteric fat)
56. Ileum
57. Sigmoid a. and superior rectal a. and w.
58. Rectus (abdominis) sheath
59. Rectus abdominis m.
60. Transverse colon
61. Lateral umbilical ligament
62. Linea alba

This section passes through the lower margin of the fifth lumbar vertebra (36) and the fifth lumbar disk (29). It cuts through the spinous process of the fifth lumbar vertebra (34).

The left common iliac artery is seen at the point of bifurcation (52) into external and internal iliac arteries.

Gluteus maximus (27, 41) and minimus (47) muscles appear for the first time.

The fourth (23) and fifth (28, 42) lumbar nerves are seen in this section. The fourth

nerve is also called the furcal (forked) nerve because it contributes to both the lumbar and sacral plexuses.

The jejunum is not cut at this level, but the ileum (3, 5, 56) is cut several times in this section. The ascending colon is greatly dilated, but not abnormally.

The greater omentum (8) does not extend beyond this section.

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