Osmolarity of plasma is: (A) 190, (B) 290, (C) 390, (D) 490
Answer is B. Plasma Osmolarity :it is a measure of hydration status.plasma Osmolarity changes during dehydration and rehydration. Plasma Osmolarity ranges from 280 to 300 mOs/kg Ref:Guyton and Hall textbook of medical physiology 12th edition ,pag number:45 46