Urine is stored in the bladder.
The process begins in the kidneys, where waste products are filtered from the blood to form urine. This urine then travels through tubes called ureters to the bladder. The bladder is a muscular, expandable sac that stores urine until it is voluntarily released from the body through the urethra.
Here's a simplified breakdown:
- Kidneys: Filter waste and produce urine.
- Ureters: Transport urine from the kidneys to the bladder.
- Bladder: Stores urine.
- Urethra: Carries urine from the bladder out of the body.
The bladder can expand to hold a significant amount of urine. The urge to urinate typically arises when the bladder is about half full. Controlling urination involves both voluntary and involuntary muscle actions.
