Which of the following increases turbulence in blood flow

The flow of blood (Laminar or turbulent) depends on -        Fluid density (S) -        Tube diameter (D) -        The velocity of the fluid (V) -        The viscosity of fluid (n) This can be expressed by Reynold’s number (R) = SDV/n Normal flow is laminar. But if the velocity crosses a critical limit (Critical velocity) flow becomes turbulent. If R>2000, flow is turbulent.