Defecation is the act of expelling feces from the digestive tract through the anus. It is an event arising from the integrated and coordinated combination of sensory-motor functions, intrinsically linked to the function of fecal continence. The large intestine functions by transporting contents from the terminal ileum to the cecum toward the anus while absorbing water and solidifying the contents. It also stores the contents until conditions are suitable for defecation. The most crucial factor for achieving normal bowel movements is feeling the urge to defecate; defecation begins with this sensation. The urge is triggered by high-amplitude propagated contractions that propel contents into the rectum. When the decision to defecate is made, the contents are expelled due to increased rectal pressure and relaxation of the pelvic floor and anal canal. Defecation is thought to be brought about by both spontaneous straining and coordinated colonic contractions. When stool is expelled, the rectum perceives emptiness, causing the external anal sphincter to contract in a reflex action known as the closure reflex, sealing the anal canal. As abdominal pressure further decreases, the pelvic floor’s postural reflex reactivates, returning the anorectal angle to its baseline position, thereby concluding defecation.