Affect of sympathetic stimulation on GFR ?
Ans. is 'c' i.e., Decreased GFR with afferent aeriolar constrictionSympathetic stimulation causes afferent aeriolar constriction with decrease in RBF and GFR.Effect of sympathetic discharge on the renal regulation of body fluid and electrolytesSympathetic discharge on the kidney results in :-Decreased GRF.Increased reabsorption of Na+ and water from the PCT.Increased reabsorption of Na+ and water from the DCT.Thirst (due to angiotensin II production).The overall effect is fluid and electrolyte retention due to :-Decreased urinary output.Decreased urinary Na' excretion.Increased water intake.
Increased GFR with afferent aeriolar dilatation
Increased GFR with efferent aeriolar constriction
Decreased GFR with afferent aeriolar constriction
Decreased GFR with efferent aeriolar dilatation