The organ that filters metabolic waste from the blood is the

• A. Small Intestine
• B. Liver
• C. Kidney
• D. Stomach

Answer: (C)

The main idea is how the body cleans the bloodstream by filtering waste. The kidneys perform this job. They contain nephrons that filter blood in the glomerulus to form a filtrate, which then passes through tubules where essential substances are reabsorbed and wastes are secreted into urine. This process removes metabolic wastes like urea and helps maintain fluid, electrolyte, and acid-base balance.

Other organs have different roles: the small intestine mainly absorbs nutrients from food; the liver detoxifies and processes chemicals but does not filter blood into urine as its primary function; the stomach digests food. Because filtering metabolic waste from the blood to produce urine is the kidneys’ specific function, they are the organ described.