Which body cavity is bounded by bone and contains the urinary bladder, sigmoid colon, and internal male and female reproductive organs?

Which body cavity is bounded by bone and contains the urinary bladder, sigmoid colon, and internal male and female reproductive organs?

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

Answer: (B)

The space within the bony pelvis is being described. This cavity is bounded by the pelvic bones and houses the urinary bladder, the sigmoid colon, and the internal reproductive organs in both men and women. The abdominal cavity is above and contains most of the digestive organs, while the thoracic cavity contains the heart and lungs. The broader abdominopelvic cavity includes both regions, but the description specifies the bone-bounded pelvic space where those structures reside.

The space within the bony pelvis is being described. This cavity is bounded by the pelvic bones and houses the urinary bladder, the sigmoid colon, and the internal reproductive organs in both men and women. The abdominal cavity is above and contains most of the digestive organs, while the thoracic cavity contains the heart and lungs. The broader abdominopelvic cavity includes both regions, but the description specifies the bone-bounded pelvic space where those structures reside.