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What percentage of cardiac output is filtered out by each kidney per minute?
Solution:
The cardiac output is approximately 5000 mL/minute. The kidneys receive about 1100-1200 mL of blood per minute, which is roughly 20-25% of the cardiac output. This blood flow is distributed to both kidneys. Therefore, the percentage of cardiac output filtered out by each kidney per minute is approximately half of this value, i.e., 10-12.5%. Among the given options, 10 percent is the most accurate.