Which of the following acts as the trigger for the initiation of micturition (voiding)?
A) the pressure of the fluid in the bladder
B) motor neurons
C) the stretching of the bladder wall
D) the sympathetic efferents

Question

Quizplus · Accepted Answer

Micturition (voiding) is initiated by the stretching of the bladder wall, which triggers the micturition reflex. When the bladder is filled with urine and stretches, stretch receptors located in the bladder wall send signals to the micturition center in the spinal cord, which then initiates the reflex to empty the bladder. The other options (A, B, and D) are not the trigger for the initiation of micturition.

Which of the Following Acts as the Trigger for the Initiation