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Sphincters are muscular valves found throughout the body used to open or close an opening. An example is the cardiac sphincter which prevents food from coming back up the esophagus after swallowing

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Which is the voluntary sphincter of the anal canal?

Assholicus Maximus & Buttockical Minimus


The voluntary sphincter is the -----sphincter?

outer anal sphincter


Are there 2 anal sphincter muscles?

Yes, there are two anal sphincter muscles: the internal anal sphincter, which is made of smooth muscle and is under involuntary control, and the external anal sphincter, which is made of skeletal muscle and is under voluntary control.


What does the anal sphincter muscle do?

The anal sphincter stops feces from falling out.


Which sphincter allows for defecation and is under voluntary control?

The external anal sphincter is under voluntary control. You have the urge to defecate because your internal anal sphincter involuntarily opens, but you can keep yourself from going to the bathroom because your external anal sphincter is voluntarily closed. Hope that helps!


What would happen if the anal sphincter failed?

There are 2 anal sphincter's; if they fail then feces will drip out of the anus.


What doctors do reconstruction of sphincter?

Colorectal surgeons are the doctors who typically perform reconstruction of the anal sphincter. This procedure may be necessary for conditions such as anal sphincter injury after childbirth or surgery for anal incontinence.


Is the anal sphincter a organ?

no


Does the anal canal have muscles?

The anal canal has a ring of muscle, called the anal sphincter


How does a rectum stay closed?

it stays closed because we do a poo poo, then it closes to brew out some more


What nerve supplies the external anal sphincter?

The external anal sphincter is primarily supplied by the inferior rectal nerve, a branch of the pudendal nerve.


Why does the anal canal have a voluntary sphincter formed by smooth muscle?

You can imagine the situation, in which case the anal sphincter in involuntary. In that case you defecate with out your knowledge.