Which body cavity holds the urinary bladder?

• A. Abdominal cavity
• B. Pelvic cavity
• C. Cranial cavity
• D. Thoracic cavity

Answer: (B)

The urinary bladder resides in the pelvic cavity. This lower, bony basin shape is the space within the pelvic bones that contains the bladder, part of the rectum, and reproductive organs. The bladder sits just behind the pubic symphysis and, as it fills, it can expand upward toward the abdominal area, but its normal, primary location is the pelvic cavity. This distinction helps differentiate it from organs in the abdominal, thoracic, or cranial cavities, which house different organ systems.