Q. With regard to the blood supply of the rectum and anus (Solved)
1. It is principally the inferior rectal artery
2. The anal canal is a site of porto-systemic anastomosis
3. The veins do not correspond to the arteries
4. The inferior mesenteric artery changes to the superior rectal artery at L3
5. The vessels do not supply the full thickness of the anal wall
- b. The anal canal is a site of porto-systemic anastomosis