what do you mean by anal sphincter ?
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sphincter muscle that regulates movement of undigested food through anus
gargraghav24pak3qx:
its wrong
it's right. actually these particul muscles cause a movement that regulates the food out going
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The external anal sphincter (or sphincter ani externus ) is a flat plane of muscular fibers, elliptical in shape and intimately adherent to the skin surrounding the margin of the anus.
The internal anal sphincter, IAS, (or sphincter ani internus) is a muscular ring that surrounds about 2.5–4.0 cm of the anal canal ; its inferior border is in contact with, but quite separate from, the external anal sphicter.
The internal anal sphincter, IAS, (or sphincter ani internus) is a muscular ring that surrounds about 2.5–4.0 cm of the anal canal ; its inferior border is in contact with, but quite separate from, the external anal sphicter.
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