Tone of the anal sphincter in maintained by
Correct Answer: Inferior rectal nerve
Description: The anal sphincters and puborectalis are the primary muscles responsible for continence. There are two sphincters: the internal anal sphincter, and the external anal sphincter. The internal sphincter is responsible for 85% of the resting muscle tone and is involuntary. ref - BDC 6e vol2 pg413-416
Category:
Anatomy
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