Peristalsis stimulation via increased fecal mass

"Peristalsis stimulation via increased fecal mass" refers to the initiation or enhancement of peristaltic contractions in the gastrointestinal tract as a response to increased volume or bulk of intestinal contents. This increased mass stretches the walls of the colon and rectum, activating stretch-sensitive enteric nerves and triggering the peristaltic reflex, which propels fecal material toward the anus, facilitating defecation[3][5][7]. Clinically, this mechanism underlies the action of many bulk-forming or osmotic laxatives used to manage constipation.

Other names

Increased fecal bulkIncreased stool massBulk-mediated peristalsis

Increases fecal mass, stimulating stretch receptors in the colonic wall, which in turn triggers peristaltic reflexes via the enteric nervous system, promoting bowel movement[3][4][5][7][9].