Explain the rectum and anal canal, Science

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Explain the Rectum and Anal Canal

Rectum: This is a slightly dilated part of the colon. It leads from the pelvic colon.

Anal canal: This is a short canal which leads from the rectum, to the exterior. There are two sphincter muscles which control the anus. The internal sphincter consists of smooth muscle fibre and is under the control of autonomic nervous system. The external sphincter is formed by striated muscle. It is under voluntary nerve control.

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