<prompt> In circulatory biomechanics which of the following is true-Blood viscosity is increased in anemiaBlood viscosity is decreased in polycythemiaCardiac output is increased in anemiaCardiac output is decreased in Beri-Beri  <response>: Ans. is c i.e., Cardiac output is increased in anemia o Cardiac output is increased in conditions which cause decrease in peripheral vascular resistanceExerciseAV fistula or shuntSevere anemiaThyrotoxicosisWet beri-beriAbout other optionso Blood viscosity is lowr in anemia and high in polycythemia. 