The glomerular filtration rate is directly related to which factor?
a. Perfusion pressure in the glomerular capillaries
b. Diffusion rate in the renal cortex
c. Diffusion rate in the renal medulla
d. Glomerular active transport
Correct answer: a. Perfusion pressure in the glomerular capillaries
Explanation:
Glomerular filtration rate (GFR) is directly influenced by the perfusion pressure in the glomerular capillaries, which drives plasma through the filtration barrier into the nephron.
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