THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Urethra. This tube allows urine to pass outside the body. The brain signals the bladder muscles to tighten, which squeezes urine out of the bladder. At the same time, the brain signals the sphincter muscles to relax to let urine exit the bladder through the urethra.

Detailed explanation-2: -These tubes are called the ureters. The bladder stores urine until it’s time to urinate. Urine leaves the body through another small tube called the urethra.