Like the stomach, the human bladder is a sac-like organ that expands and contracts when emptying. Located in the pelvis, above and behind the pubic bone, the bladder’s main function is to collect and ...

The bladder neck is a group of muscles that connect the bladder to the urethra. The muscles tighten to hold urine in the bladder, and relax to release it through the urethra. Urinary problems occur ...