MICROANATOMY

Detailed explanation-1: -Two muscles as urethral sphincters are used to control the exit of urine in the urinary bladder through the urethra. The two muscles are the internal and EUS.

Detailed explanation-2: -Your urinary sphincter is a muscle that controls the flow of urine (pee) out of your bladder (see Figure 1). When your urinary sphincter is contracted (closed), it blocks the opening of your bladder so urine doesn’t leak out.

Detailed explanation-3: -You use ring-shaped muscles called sphincter muscles to control urine flow. An outer layer of smooth muscle called the detrusor muscle surrounds the bladder. When your bladder is full, the muscles in the bladder wall can be tightened to squeeze out the urine.