Which of the following vessels supply the anal canal?
(A) Superior rectal aery (B) Middle rectal aery (C) Inferior rectal aery (D) all of the following
(D) Ans: D. all of the above aeries supply rectal canal(Ref: Gray's 41/e p1058, 40/e p1155-1159; Manual of Total Mesorectal Excision by Moran, Richard John Heald (2013)/p40)Anal canal - Supply:By superior rectal, middle rectal, inferior rectal branches of pudendal aery.Occasionally by median sacral aery.