Which of the following factors is NOT involved in the process of preventing micturition in spite of initiation of the reflex?
A)the cerebral cortex
B)voluntary stimulation of the motor neuron supplying the external urethral sphincter
C) voluntary stimulation of the internal urethral sphincter via its parasympathetic nerve supply

Question

Quizplus · Accepted Answer

Voluntary stimulation of the internal urethral sphincter is not involved in preventing micturition. In fact, the internal urethral sphincter is relaxed by the parasympathetic nervous system during the micturition reflex, allowing urine to flow out of the bladder. The cerebral cortex and voluntary stimulation of the external urethral sphincter are important in preventing micturition in spite of the initiation of the reflex.

Which of the Following Factors Is NOT Involved in the Process