A crack or tear in the lining of the anus is called a(n) :

A) sentinel pile
B) rectal excision
C) anal fissure
D) digital dilation

Anal Fissure

A small tear in the lining of the anus, often causing pain and bleeding during bowel movements.

Sentinel Pile

A skin tag or small lump that develops at the edge of an anal fissure, often serving as a sign of underlying anal or rectal issues.