Rectum anal

Duration: 13min 26sec Views: 1018 Submitted: 29.09.2020
Category: Squirt
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The rectum is the final straight portion of the large intestine in humans and some other mammals , and the gut in others. The adult human rectum is about 12 centimetres 4. It terminates at the level of the anorectal ring the level of the puborectalis sling or the dentate line , again depending upon which definition is used. The word rectum comes from the Latin rectum intestinum , meaning straight intestine.

Anal Disorders

Rectum - Wikipedia

Rectal prolapse occurs when the rectum the last section of the large intestine falls from its normal position within the pelvic area and sticks out through the anus. The word "prolapse" means a falling down or slipping of a body part from its usual position. Rectal prolapse is common in older adults who have a long-term history of constipation or a weakness in the pelvic floor muscles. It is more common in women than in men, and even more common in women over the age of 50 postmenopausal women , but occurs in younger people too. Rectal prolapse can also occur in infants — which could be a sign of cystic fibrosis — and in older children. Rectal prolapse results from a slippage of the attachments of the last portion of the large intestine.

Rectum and Anus

The rectum is a chamber that begins at the end of the large intestine, immediately following the sigmoid colon, and ends at the anus see also Overview of the Anus and Rectum. Ordinarily, the rectum is empty because stool is stored higher in the descending colon. Eventually, the descending colon becomes full, and stool passes into the rectum, causing an urge to move the bowels defecate. Adults and older children can withstand this urge until they reach a bathroom.
The rectum is a muscular tube about 13 cm 5 in. The rectum connects the colon to the anus, which is the opening where stool exits the body. The internal and external anal sphincters are rings of muscle at the opening of the anus. The sphincters keep the anus closed as stool collects in the rectum. Eventually the pressure on the rectum wall causes the internal anal sphincter to relax.