Question

Which of the following initiates the voluntary signal given by CNS?

(a) Loosening of stretch receptors in the urinary bladder

(b) Stretching of the urinary bladder

(c) Movement of the urinary bladder

(d) Movement of urethra

I got this question in an online quiz.

My query is from Disorders in Excretory System in portion Excretory Products and Elimination of Biology – Class 11

Answer 1

Correct answer is (b) Stretching of the urinary bladder

The explanation: The signal given by CNS is initiated by the stretching of the urinary bladder as it gets filled with the urine. In response, the stretch receptors on the walls of the bladder send signals to the CNS.