Which organs are part of the Urinary or Excretory System?

• A. Mouth, esophagus, stomach
• B. Kidneys, ureters, urinary bladder, urethra
• C. Larynx, trachea, bronchi
• D. Reproductive organs

Answer: (B)

Think about the body parts that handle waste removal and fluid balance. The urinary system is responsible for filtering wastes from the blood and regulating water and electrolyte levels. Its main components are the kidneys, which filter blood to form urine; the ureters, which move urine to the bladder; the urinary bladder, which stores urine; and the urethra, which releases urine from the body. The other groups listed belong to different body systems: the digestive organs process food, the airways handle breathing, and the reproductive organs belong to the reproductive system. So, the kidneys, ureters, bladder, and urethra are the parts that make up the urinary/excretory system.