Question

Act of passing urine is called​

Answer 1

Micturition, or urination, is the act of emptying the bladder.

Answer 2

$\huge \fbox \red{answer}$

Micturition, or urination, is the act of emptying the bladder. The detrusor muscle that surrounds the bladder contracts. The internal urethral sphincter relaxes, allowing for urine to pass out of the bladder into the urethra. Both of these reactions are involuntary. The external urethral sphincter is voluntary.

hope it helps