RECTUM

The rectum is the final section of the large intestine, serving as a crucial component of the digestive system. Situated between the sigmoid colon and the anal canal, it is approximately 12 centimeters long. The rectum plays an essential role in the storage and expulsion of feces, acting as a temporary holding chamber before the process of defecation. Its walls are lined with a mucous membrane that helps in lubricating the stool to facilitate its passage. The rectum also contains stretch receptors that signal when it is full, prompting the urge to defecate. This organ functions not only in the elimination of waste but also in maintaining the balance of bodily fluids and electrolytes. Overall, the rectum is vital for proper digestive health and the elimination of waste products from the body.