the actual muscle of the bladder that is involved in contraction to expel the urine from the bladder.

A band of smooth muscle fibres that form the outer muscular coat of the bladder and are attached to the pubis.

The outer muscle of the bladder or "bladder muscle" which is used to force urine from the bladder.

The large muscle in the bladder that expands to store urine and squeezes or contracts when the bladder is emptied and urine is passed

the smooth muscle layers of the bladder

Smooth muscle in the wall of the urinary bladder that contracts the bladder to expel urine.

Contracting muscle in the bladder that helps to expel urine.