Physiology Heart, Circulation, and Blood b840766f Fahraeus Lindquist effect is: A Increase in viscosity in vessels less than 0.5-1 mm in diameter B Decrease in viscosity in vessels less than 0.5-1 mm in diameter C Increase in viscosity in vessels more than 0.5-1 mm in diameter D Decrease in viscosity in vessels more than 0.5-1 mm in diameter High-Yield Explanation Ans. A. Increase in viscosity in vessels less than 0.5-1 mm in diameter