Which structure is part of the urinary system?

Which structure is part of the urinary system?

• A. Kidneys
• B. Liver
• C. Esophagus
• D. Lungs

Answer: (A)

Identifying which organs belong to the urinary system and what that system does. The kidneys are the main organs of the urinary system; they filter waste from the blood, help regulate fluid and electrolyte balance, and produce urine that is stored in the bladder. The other options belong to different body systems: the liver is involved in digestion and metabolic processes, the esophagus is part of the digestive tract that moves food to the stomach, and the lungs handle gas exchange in the respiratory system. Because only the kidneys are part of the urinary system, they are the correct structure.

Identifying which organs belong to the urinary system and what that system does. The kidneys are the main organs of the urinary system; they filter waste from the blood, help regulate fluid and electrolyte balance, and produce urine that is stored in the bladder. The other options belong to different body systems: the liver is involved in digestion and metabolic processes, the esophagus is part of the digestive tract that moves food to the stomach, and the lungs handle gas exchange in the respiratory system. Because only the kidneys are part of the urinary system, they are the correct structure.