Read Me First - University of Phoenix

Rectum and Anal Canal. adult is usually 4-6 in long. anal canal is distal portion of rectum 1-2 in long. each vertical fold in rectum contains an artery and a vein; functions to retain feces within the rectum. hemorrhoids - a condition that occurs when the veins in the rectum become distended as can occur with repeated pressure. anal canal ................
................