Question

what organ contains the detrusor muscle?
multiple choice
urethra
urinary bladder
kidneys
ureter

Explanation:

The detrusor muscle is a smooth muscle layer in the wall of the urinary bladder. Its contraction helps in the process of urination (micturition). The urethra is a tube for urine passage, the kidneys filter blood to form urine, and the ureter transports urine from the kidney to the bladder. None of these (urethra, kidneys, ureter) have the detrusor muscle as their main muscle component for the function related to the bladder's role in urine storage and expulsion.

Answer:

Urinary bladder