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describe how the muscles of the anus and urethra are similar. What is the benefit of...

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Medical Sciences

describe how the muscles of the anus and urethra aresimilar. What is the benefit of the organisms arrangement?

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4.1 Ratings (847 Votes)
Aus is an opening that is connected to lower gastrointestinal tractIt is composed of cells called squamous cellsIt has two muscles internal sphincter and external sphincterInternal anal sphincter is a muscle ring that is surrounding the anal canalIt is an involuntary muscle and is about 5mm thickIt is always in a state of contraction and this contractions are stimulated by sypathetic fibersThese contractions are    See Answer
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