The adult internal rectal sphincter is controlled by the:
A) autonomic nervous system.
B) central nervous system.
C) lumbar spinal reflexes.
D) sacral spinal reflexes.

Name: The adult internal rectal sphincter is controlled by the: A) autonomic nervous system. B) central nervous system. C) lumbar spinal reflexes. D) sacral spinal reflexes.
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Question

Quizplus · Accepted Answer

The internal ring of smooth muscle of the anal canal is under involuntary autonomic control.

The Adult Internal Rectal Sphincter Is Controlled by The