Which term describes the body system that includes the kidneys, ureters, bladder, and urethra?

• A. Digestive System
• B. Urinary System
• C. Circulatory System
• D. Lymphatic System

Answer: (B)

This question centers on the urinary system, which filters wastes from the blood and helps regulate water and electrolyte balance. The kidneys remove waste and form urine; the ureters carry urine to the bladder; the bladder stores urine; and the urethra releases urine from the body. This stands apart from the digestive system, which processes food; the circulatory system, which moves blood; and the lymphatic system, which supports immunity and fluid balance but does not produce urine. So the term that describes the body system containing those organs is the urinary system.