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 6.20

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. Common iliac a. 2. Right ureter 3. Common iliac v. 4. Anulus fibrosus, fifth lumbar intervertebral disk 5. Ascending colon 6. Psoas major m. 7. Femoral nerve 8. Iliacus m.	9. Fifth lumbar nerve 10. Ilium and sacroiliac joint 11. Gluteus medius m. 12. Gluteus maximus m. 13. Nucleus pulposus, fifth lumbar intervertebral disk 14. First sacral nerve 15. Multifidus m. 16. Nerve roots in theca	17. Supraspinous ligament 18. Ligamentum flavum 19. Dorsal thoracolumbar fascia 20. Multifidus m. 21. Iliocostalis and longissimus m. 22. Sacrum, first sacral vertebra 23. Interosseous sacroiliac ligament 24. Gluteus medius m. 25. Fifth lumbar nerve 26. Iliacus m. 27. Fourth lumbar nerve	28. Obturator nerve 29. Femoral nerve 30. Ilium and lateral (femoral) cutaneous nerve (of thigh) 31. Iliohypogastric and ilioinguinal nerves 32. Descending colon 33. Internal iliac v. 34. Psoas major m. 35. Ileum 36. Genitofemoral nerve 37. Ileum 38. Common iliac a. 39. Left ureter 40. Inferior vena cava at junction with left common iliac v. 41. Mesentery 42. Linea alba

This section passes through the linea alba (42), elements of the ileum (37), descending colon (32), ascending colon (5), the first sacral vertebra (22), the fifth lumbar intervertebral disk (4, 13), and the ilium (10, 30).

The inferior vena cave is seen at its junction with the left common iliac vein (40). The common iliac arteries are identified (1, 38).

Also seen are the genitofemoral (36), iliohypogastric and ilioinguinal (31), lateral (femoral) cutaneous (of thigh) (30), femoral (29), obturator (28), fourth (27) and fifth (9, 25) lumbar, and first sacral (14) nerves.

Important ligaments include interosseous sacroiliac (23), ligamentum flavum (18), and supraspinous (17).

The position of the ureters (2, 39) has not changed from that in the preceding section.

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