THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -feces, also spelled faeces, also called excrement, solid bodily waste discharged from the large intestine through the anus during defecation. Feces are normally removed from the body one or two times a day. About 100 to 250 grams (3 to 8 ounces) of feces are excreted by a human adult daily.

Detailed explanation-2: -Stool enters the rectum (2) from the colon (1). There are two major muscles the stool must pass through to exit the body, the internal sphincter muscle and the external sphincter muscle (4). The internal sphincter muscle is “involuntary”.