Here's a breakdown of its functions:
* Storage: The bladder expands and contracts to hold and store urine. It can hold up to about 500 ml (17 ounces) of urine, but you'll usually feel the urge to urinate when it's about half full.
* Expulsion: When the bladder is full, signals are sent to the brain to trigger the urge to urinate. The bladder muscles then contract, and the sphincter muscle at the bottom of the bladder relaxes, allowing urine to flow out through the urethra.
The bladder plays a crucial role in maintaining the body's fluid balance and removing waste products from the blood.