The glomerular filtration rate
A) averages 125 ml/min
B) averages 75 liters/day
C) represents 60 to 65 percent of the cardiac output
D) is less than the rate of renal reabsorption
E) all of these

Question

Quizplus · Accepted Answer

The glomerular filtration rate (GFR) averages 125 ml/min in a healthy adult. While option B is true (the daily GFR is approximately 180 L/day), it is not the best answer because the question is asking about the rate per minute. Option C is not true because the renal blood flow (not GFR) represents 20-25% of the cardiac output. Option D is not true because GFR is the rate at which the kidneys filter the blood and is typically greater than the rate of renal reabsorption. Therefore, the best choice is A.

The Glomerular Filtration Rate