NEET Zoology Human Excretory System MCQ Question
If a human kidney contains over a million nephrons, and each nephron is responsible for the filtration of 125 mL of blood per minute, what is the approximate total volume of blood filtered by both kidneys in one hour?
15,000 liters
7,500 liters
3,750 liters
1,875 liters
Correct Answer
Detailed Explanation
Each nephron filters 125 mL/min. With over a million nephrons in each kidney, this results in 125,000 mL/min per kidney. For both kidneys, this is 250,000 mL/min or 250 liters/min. Over one hour (60 minutes), this amounts to 250 x 60 = 15,000 liters. Given the options, the calculation considers the function of both kidneys together.
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