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Definition | : | Internal Anal Sphincter |
Category | : | Medical » Anatomy & Physiology |
Country/ Region |
: | Worldwide
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Popularity | : |
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Internal Anal Sphincter (IAS) is a muscle ring, formed by an increase of the circular muscle fibers of the rectum, situated at the upper end of the anal canal, internal to the outer voluntary external anal sphincter.
The full form of IAS is Internal Anal Sphincter
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