Identify the following:

1. right external iliac artery

2. left external iliac artery

3. right external iliac vein

4. left external iliac vein

5. sigmoid colon

6. sigmoid mesentery

7. superior rectal vessels

8. descending colon

9. small bowel

10. gluteus maximus

11. gluteus medius

12. gluteus minimus

13. piriformis

14. inferior epigastric vessels