The process of preventing micturition in spite of initiation of the reflex involves
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
D)both a and b
E)a, b, and c

Question

Quizplus · Accepted Answer

The process of preventing micturition in spite of initiation of the reflex involves both the cerebral cortex and voluntary stimulation of the motor neuron supplying the external urethral sphincter. The internal urethral sphincter is controlled involuntarily by the parasympathetic nervous system, so option C is incorrect. Therefore, the correct answer is option D - both a and b.

The Process of Preventing Micturition in Spite of Initiation of the Reflex