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Revision as of 19:11, December 31, 2007 by Dr Joe Kiff (Talk | contribs)





Many sphincters are used every day in the normal course of digestion. For example, the epiglottis is used to seal off the windpipe when swallowing, so as to ensure that no food or liquid enters the lungs. The use of the epiglottis is a typical example of an involuntary action by the body.

Examples of sphincters Edit

Sphincters prove effective in the mediation of the entrance or release of liquids and fluids; this is evident in the blowholes of numerous marine mammals, for example.

Effect of short term stress on sphinctersEdit

Effect of chronic stress on sphintersEdit


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