What is the primary substance stored in the urinary bladder?

• A. Bile
• B. Feces
• C. Urine
• D. Blood

Answer: (C)

The bladder’s primary role is to store urine. Urine is the liquid waste produced by the kidneys after filtering blood and processing it through the urinary system. It travels down the ureters and collects in the bladder, where the walls stretch to hold increasing volumes until you’re ready to urinate. When enough urine has accumulated, signals from the bladder prompt the urge to void and the urine is expelled through the urethra. The other options don’t fit because bile is stored in the gallbladder, feces are stored in the rectum, and blood is a circulating fluid not stored in the bladder.