Mention the part of the alimentary canal, which help in eliminating the unabsorbed food?

(i) Mention the part of the alimentary canal, which help in eliminating the unabsorbed food?
(ii) How is the exit of waste material regulated?

(i) Anus helps in eliminating the unabsorbed food.
(ii) Anal sphincter regulates the unabsorbed food, which releases it in small amounts into the small intestine.