Laminar flow is directly proportional to:

Ans: c (Viscosity) Ref: Ganong,22nd ed, p. 583Laminar How is directly proportional to viscosity.Laminar flow or streamline flow can be described as flow of blood in straight blood vessels. Laminar (low occurs at velocities upto a certain critical velocity. At or above this velocity, (low is turbulent, i.e., laminar flow is disrupted. Thus laminar flow is indirectly proportional to turbulence.Turbulence is related to Reynolds numberRe =rDV----nRe - Reynolds numberr - Density of the fluidD - Diameter of the tubeV - Velocityn - Viscosity of the fluidBRIDGEIn anaemia, the flow is turbulent be- cause the viscosity is lowWhen Reynolds number decreases the flow becomes laminar.So when viscosity|, the Reynolds number | and flow becomes laminar.Note:Flow is usually not turbulent if Re is less than 2000.Flow is almost always turbulent if Re is greater than 3000.