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The Defecation Reflex Involves

Question 178

Multiple Choice

The defecation reflex involves


A) sympathetic nerves.
B) sympathetic relaxation of both the internal and external anal sphincters.
C) conscious control of both the internal and external anal sphincters.
D) relaxation of the ileocecal valve to move feces into the rectum.
E) parasympathetic nerve control from sacral nerves.

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