Pathophysiology of Constipation

Defecation as well on urination is a physiological process that includes working smooth muscles, and fiber latitude, central and peripheral innervation, coordination of the reflex system, good awareness and physical ability to reach a place of defecation. The difficulty of diagnosis and management of constipation is because of the many mechanisms involved in the normal process of defecation (urge to defecate normally stimulated by rectal distension through four stages, among others: the stimulus baffle recto-anal reflex, muscle relaxation of the internal sphincter, external sphincter muscle relaxation and muscles in the pelvic region, and an increase in intra-abdominal pressure). Disruption of one of these mechanisms can result in constipation . Defecation starting peristalsis of the large intestine to the rectum to deliver feces removed. Feces enter and stretch the ampulla of the rectum followed by relaxation of the internal anal sphincter. To avoid spontaneous spending stool, occurri...