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DigestReg

Adaptive test — questions are selected based on your ability estimate. — Tag: DefecationReflex

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What triggers the defecation reflex?

Release of CCK from enteroendocrine cells in the duodenum, which signals contraction of the sigmoid colon Relaxation of the ileocecal sphincter by gastrin, which allows chyme to fill the cecum and ascending colon Distension of the rectum by feces, which activates stretch receptors that send signals to the sacral spinal cord Filling of the stomach, which causes gastrin release and mass peristalsis in the transverse colon

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