Physiology Which of the following causes increase in both GFR and renal plasma flow? A Increased plasma colloid osmotic pressure B Dilatation of afferent aerioles C Constriction of afferent aerioles D Increased tubular pressure 💡 Explanation Which of the following causes increase in both GFR and renal plasma flow? ✓ Correct Answer: B. Dilatation of afferent aerioles