Which organ filters the blood and forms urine?

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Multiple Choice

Which organ filters the blood and forms urine?

Explanation:
The kidneys filter the blood and form urine. They remove waste and excess fluids through a process that starts in the glomerulus, where plasma is filtered, and continues through the renal tubules where reabsorption and secretion fine-tune what becomes urine. The urine then flows to the bladder to be excreted. This organ system also helps regulate fluid and electrolyte balance, acid-base balance, and blood pressure, and can produce hormones like erythropoietin. The liver handles metabolism and detoxification, the heart pumps blood, and the lungs exchange gases; none of these directly form urine.

The kidneys filter the blood and form urine. They remove waste and excess fluids through a process that starts in the glomerulus, where plasma is filtered, and continues through the renal tubules where reabsorption and secretion fine-tune what becomes urine. The urine then flows to the bladder to be excreted. This organ system also helps regulate fluid and electrolyte balance, acid-base balance, and blood pressure, and can produce hormones like erythropoietin. The liver handles metabolism and detoxification, the heart pumps blood, and the lungs exchange gases; none of these directly form urine.

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