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

Anatomy Atlases(tm) : A digital library of anatomy information

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

Plate 6.6

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. Pyramidalis m. (first appearance) 2. Sigmoid colon 3. Peritoneal cavity 4. Inferior epigastric a. and v. 5. Sigmoid mesocolon 6. Linea semilunaris and lateral umbilical ligament 7. Cecum 8. Mesoappendix 9. Vermiform appendix 10. Deep circumflex iliac a. and v. 11. Inguinal ligament, origin from anterior superior iliac spine 12. Testicular neurovascular bundle 13. Tensor fascia lata m. 14. Iliotibial tract 15. Os ilium	16. External iliac v. and obturator nerve 17. Superficial fascia (panniculus adiposus) 18. Superior gluteal a. and v. and tendon of gluteus medius m. 19. Superior gluteal a. and v. 20. Internal iliac a. and v. 21. Posterior and ventral sacroiliac ligaments and lumbosacral trunk 22. Second sacral nerve 23. Piriformis m. 24. Third sacral nerve 25. Sigmoid colon 26. Fourth sacral nerve and anterior longitudinal ligament 27. Sacrum, third sacral vertebra	28. fourth sacral canal and sacral intervertebral cartilage 29. Thoracolumbar fascia 30. Third sacral nerve 31. Piriformis m. (first appearance) 32. Peritoneal cavity 33. Second sacral nerve 34. Sacroiliac joint 35. Internal iliac a. and v. 36. First sacral nerve 37. Ala of sacrum 38. Gluteus maximus m. 39. Lumbosacral trunk and left ureter 40. Iliacus m. insertion onto ventral sacroiliac ligament and ala of sacrum 41. Gluteus medius m.	42. Obturator nerve 43. Iliac fascia 44. Gluteus minimus m. 45. Femoral nerve 46. Anterior superior iliac spine 47. Aponeurosis joining iliacus m. and inner lateral abdominal wall mm. 48. External iliac a. and v. 49. Internal abdominal oblique m. (same origin as 50) 50. Transversus abdominis m. (an origin from aponeurosis of iliacus m. and iliac fascia) 51. Sigmoid colon 52. Testicular a. and v. and genital br. of genitofemoral nerve 53. External iliac Iymph nodes 54. Rectus (abdominis) sheath at arcuate and semilunar lines 55. Lateral umbilical ligament 56. Colon 57. Urinary bladder 58. Rectus abdominis m. 59. Median umbilical ligament

This section passes through the third sacral vertebra (27) and the anterior sacral foramina, in which the third sacral nerve (24, 30) is located. The fourth pair of sacral nerves (26) lie within the sacral canal (28) near the anterior sacral foramina. The sacroiliac joints (34) and the anterior superior spines (11, 46) of os ilium are seen in this cut.

On the right side, the bifurcation of the common iliac into the external and internal iliac veins (16, 20) is complete.

Piriformis (23, 31), tensor fasciae latae (13), and pyramidalis (1) muscles appear for the first time. Note an unusual (var.) origin of transversus abdominis (50) and internal oblique (49) muscles from the iliac fascia covering the iliacus (47) muscle.

The inguinal ligament (11) has its origin from the anterior superior spine (11).

The cecum (7), mesoappendix (8), and vermiform appendix (9) are seen in this section.

Next Page | Previous Page | Section Top | Title Page

Anatomy Atlases is curated by Michael P. D'Alessandro, M.D. and Ronald A. Bergman, Ph.D.

Please send us comments by filling out our Comment Form.

"Anatomy Atlases", the Anatomy Atlases logo, and "A digital library of anatomy information" are all Trademarks of Michael P. D'Alessandro, M.D.

Anatomy Atlases is funded in whole by Michael P. D'Alessandro, M.D. Advertising is not accepted.

Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.

The information contained in Anatomy Atlases is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.

URL: http://www.anatomyatlases.org/