Defecation (or defaecation) follows digestion and is the necessary biological process by which organisms eliminate a solid, semisolid, or liquid waste material known as feces (or faeces) …

Dec 16, 2025 · Defecation, the act of eliminating solid or semisolid waste materials (feces) from the digestive tract. In human beings, wastes are usually removed once or twice daily, but the …

When defecation proceeds, signals cause strong contractions in the colon and rectum, propelling feces toward the anus. Simultaneously, the external anal sphincter is voluntarily relaxed, and …

Nov 13, 2023 · The process begins with mass movement from the colon to the rectum, initiating the defecation reflex, which involves rectal contraction and internal and external anal sphincter …

Aug 12, 2023 · Explore the physiology of defecation, including gastrointestinal motility, rectal filling and sensation, the defecation reflex, and factors affecting bowel movements. Understand the …

When undigested material reaches the distal colon and rectum it triggers a coordinated series of events known collectively as the defecation reflex. As the rectum fills, its walls stretch and …

This process involves the coordinated actions of various muscles and neural signals to expel feces, which are formed from undigested food, bacteria, and other waste products. Efficient …

Discover comprehensive resources and information on Constipation and Defecation Problems provided by ACG. Explore more about these common gastrointestinal issues.

Movement of feces (undigested food, bacteria, mucus, and cells from the lining of the intestines) through the bowel and out the anus. Also called bowel movement.

Nov 13, 2023 · Defecation is the term for the act of expelling feces from the digestive tract via the anus. This complex function requires coordination between the gastrointestinal, nervous, and …