The effector of the defecation reflex is the:
A)internal anal sphincter, which contracts
B)rectum, which contracts
C)spinal cord
D)external anal sphincter, which relaxes

Name: The effector of the defecation reflex is the: A)internal anal sphincter, which contracts B)rectum, which contracts C)spinal cord D)external anal sphincter, which relaxes
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Question

Quizplus · Accepted Answer

The effector of the defecation reflex is the rectum, which contracts to expel feces. The internal anal sphincter relaxes, not contracts, during this reflex.

The Effector of the Defecation Reflex Is The