Distention of the rectal wall triggers the defecation reflex, leading to peristaltic waves in the descending colon and relaxation of the internal and external anal sphincters.
La distensión de la pared del recto desencadena el reflejo de defecación, generando ondas peristálticas en el colon descendente y relajando los esfínteres anales interno y externo.
| Front | What triggers the defecation reflex what happens next |
|---|---|
| Back | Distention of the wall of rectum • Peristaltic waves are generated in the descending colon • The internal & external anal sphincters relax |
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