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"Laughter and fun is the best medicine."

Diana Mossop

About The Human Anus

The information on this page is about the human anus and where applicable other body parts that are associated or related to the anus.


Anus

The anus is a canal at the end of the digestive tract through which feces is expelled. It is about five inches long and is an extension of the rectum. It is only open during the expulsion of feces, because it is usually kept closed by sphincter muscles, which can be relaxed at will.

Rectum

The rectum is a short, muscular tube that forms the lowest portion of the large intestine and connects it to the anus. Feces collects here until pressure on the rectal walls cause nerve impulses to pass to the brain, which then sends messages to the voluntary muscles in the anus to relax, permitting expulsion.

Sphincter Muscles

A "sphincter" is a ring of muscle around a natural opening or passage that acts like a valve, regulating inflow and outflow. The outlet from the stomach into the duodenum is the "pyloric" sphincter and controls the stomach's outflow. The "anal" sphincter alters rectal outflow and is partly voluntary, allowing a decision on when to empty the bowel.

The information on this website is provided for information purposes only and is not intended or recommended as a substitute for professional medical advice. Always seek the advice of your doctor/physician or other qualified health care provider regarding any medical condition or treatment. Some or all of the information on this page may be supplied by a third-party and not controlled by the DianaMossop.com website or authors and is therefore is not the responsibility of the DianaMossop.com website or its authors.

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