Pharmacology of Renal System and Diuretics Multiple Choice Question 1) Osmotic diuretics are a class of drugs that work by increasing the osmolarity (concentration) of the filtrate in the renal tubules, which inhibits the reabsorption of water and electrolytes such as sodium and chloride. This results in increased urine output and removal of excess fluid from the body. Osmotic diuretics are contraindicated in...........................................? a) Increased intracranial tension b) Increased intraocular tension c) Established acute renal failure d) Poisonings 2) The antidiuretic action of Desmopressin is due to activation of...........................................? a) V 1a receptor b) V 2 receptor c) V 1b receptor d) V1 and V2 receptor 3)Furosemide is a loop diuretic that acts on the ascending limb of the loop of Henle in the kidney. Furosemide increases the excretion of all of the following except: a) Sodium b) Potassium c) Uric acid d) Calcium and ...