GIT-REFLEXES
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SUMMARY
1. Gastro-colic reflex: increase in colonic activity after ingestion of food. Cholinergically mediated reflex.
2. Colo-colonic reflex: causes muscles above the dilatation to contsrict and muscles below to relax, propelling food forward. Generated by the myenteric plexus.
3. Recto-colic reflex: colonic peristalsis in response to chemical/mechanical stimulation of the rectum/anal canal. Mediated by the pelvic nerve.
4. Ano-rectal reflex: involuntary relaxation of the internal anal sphincter as stool passes into the rectum.
Reference(s)
Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education
