20. Rectum, Anal Canal, Ischiorectal Fossa

Question 1

Function of rectum?

Answer 1

Store feces

Question 2

3 flextures of rectum?

Answer 2

1. Rectosigmoid flexture
2. Sacral flexture
3. Anorectal flexture

Question 3

Function of anorectal flexture?

Answer 3

Fecal continence

Question 4

What line divides the anal canal into an upper and lower half?

Answer 4

Pectinate/dentate line

Question 5

Upper half of anal canal vascular supply?

Answer 5

Superior rectal artery

Inferior mesenteric vein

Question 6

Lower half of anal canal vascular supply?

Answer 6

Inferior rectal artery

Inferior rectal vein

Question 7

Purpose of levator ani?

Answer 7

Maintaining anorectal angle