Voluntary control of the urination reflex is provided by the ____, which ____.
A)internal urethral sphincter/contracts to permit urination
B)external urethral sphincter/contracts to prevent urination
C)internal urethral sphincter/relaxes to permit urination
D)external urethral sphincter/relaxes to prevent urination

Question

Quizplus · Accepted Answer

The external urethral sphincter, which is under voluntary control, contracts to prevent urination. This allows individuals to decide when they want to urinate.

Voluntary Control of the Urination Reflex Is Provided by the ____