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  2. Stoma (medicine) - Wikipedia

    en.wikipedia.org/wiki/Stoma_(medicine)

    In anatomy, a stoma (pl.: stomata / ˈ s t oʊ m ə t ə / or stomas) is any opening in the body.For example, a mouth, a nose, and an anus are natural stomata. Any hollow organ can be manipulated into an artificial stoma as necessary.

  3. Human anus - Wikipedia

    en.wikipedia.org/wiki/Human_anus

    In humans, the anus (pl.: anuses or ani; from Latin ānus, "ring", "circle") [1] [2] is the external opening of the rectum located inside the intergluteal cleft.Two sphincters control the exit of feces from the body during an act of defecation, which is the primary function of the anus.

  4. Anal canal - Wikipedia

    en.wikipedia.org/wiki/Anal_canal

    In humans, the anal canal is approximately 2.5 to 4 cm (0.98 to 1.57 in) long, from the anorectal junction to the anus. [2] [3] [4] It is directed downwards and backwards.. It is surrounded by inner involuntary and outer voluntary sphincters which keep the lumen closed in the form of an anteroposterior sl

  5. Defecation - Wikipedia

    en.wikipedia.org/wiki/Defecation

    Human anatomy of the anorecturm (anus and rectum). Defecation (or defaecation) follows digestion, and is a necessary process by which organisms eliminate a solid, semisolid, or liquid waste material known as feces from the digestive tract via the anus or cloaca.

  6. Internal anal sphincter - Wikipedia

    en.wikipedia.org/wiki/Internal_anal_sphincter

    The internal anal sphincter, IAS, or sphincter ani internus is a ring of smooth muscle that surrounds about 2.5–4.0 cm of the anal canal.It is about 5 mm thick, and is formed by an aggregation of the smooth (involuntary) circular muscle fibers of the rectum.

  7. External anal sphincter - Wikipedia

    en.wikipedia.org/wiki/External_anal_sphincter

    The external anal sphincter is far more substantial than the internal anal sphincter. The proximal portion of external anal sphincter overlaps the internal anal sphincter (which terminates distally a little distance proximal to the anal orifice) superficially; where the two overlap, they are separated by the intervening conjoint longitudinal muscle.

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    mail.aol.com/?rp=webmail-std/en-us/basic

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Rectum - Wikipedia

    en.wikipedia.org/wiki/Rectum

    The rectum acts as a temporary storage site for feces. The rectum receives fecal material from the descending colon , transmitted through regular muscle contractions called peristalsis . [ 11 ] As the rectal walls expand due to the materials filling it from within, stretch receptors from the nervous system located in the rectal walls stimulate ...