Question

GFR would be increased by

• A. Constriction of the afferent arteriole
• B. A decrease in afferent arteriolar pressure
• C. Compression of the renal capsule
• D. A decrease in the concentration of plasma protein

Answer 1

The correct option is D A decrease in the concentration of plasma protein

Glomerular Filtration Rate (GFR) is the amount of filtrate formed per unit time. The primary driving force for GFR is blood pressure opposed by fluid pressure in Bowman's capsule and colloid osmotic pressure due to plasma proteins. With fewer plasma proteins, the plasma has lower than normal colloid osmotic pressure. With less colloid osmotic pressure opposing GFR, GFR increases.

So, the correct answer is 'A decrease in the concentration of plasma protein'.