Top 150+ Solved Renal MCQ Questions Answer
Q. Which of the following blood gas results is consistent with a three-week residence at 4000m altitude, after previously living at sea-level? pH HCO3 - (meq/L) pCO2
a. 7.40 24.1 40
b. 7.50 30.1 40
c. 6.96 5.0 23
d. 7.34 33.5 64
e. 7.48 18.7 26
Q. In a resting adult, the kidneys receive how much of the cardiac output?
a. 15%
b. 20%
c. 25%
d. 30%
e. 35%
Q. Which of the following is INCORRECT regarding regulation of renal blood flow?
a. noradrenaline constricts the renal vessels
b. dopamine causes renal vasodilation and natriuresis
c. angiotensin II exerts a constrictor effect on the efferent arterioles
d. prostaglandins increase blood flow in the renal cortex and decrease blood flow in the renal medulla
e. acetylcholine produces renal vasoconstriction
Q. Erythropoietin:
a. is produced in the juxtaglomerular cells of the kidney
b. production is stimulated by theophylline
c. secretion is facilitated by the acidosis that develops at high altitude
d. has a half-life in the circulation of about 5 hours
e. is produced predominantly in the spleen in neonates
Q. Mesengial cell contraction is stimulated by:
a. ANP
b. dopamine
c. PGE2
d. cAMP
e. angiotensin II
Q. Ethanol’s action as a diuretic occurs by:
a. inhibition of vasopressin secretion
b. inhibition of the action of vasopressin on the collecting duct
c. production of an osmotic diuresis
d. decreasing tubular reabsorption of Na and increasing GFR
e. inhibition of the Na+ -K+ -Cl- cotransporter in the medullary thick ascending limb of the loop of Henle
Q. With regard to diuretics:
a. frusemide acts on the thick ascending limb of the loop of Henle
b. antagonists to V2 vasopressin receptors act on the early portion of the distal convoluted tubule
c. thiazides act primarily on the thick ascending limb of the loop of Henle
d. loop diuretics act on the collecting ducts
e. aldosterone antagonists act on the early portion of the distal convoluted tubule
Q. In the presence of vasopressin, most filtered water is absorbed in the?
a. proximal tubule
b. loop of Henle
c. distal tubule
d. cortical collecting system
e. medullary collecting system
Q. Which pattern of laboratory findings in the tale below is most consistent with a diagnosis of diabetes insipidis? 24 Hr Urine Vol Ketones Glucose Protein
a. 4.0 + 0 0
b. 6.2 2+ 4+ 0
c. 1.6 0 0 4+
d. 6.4 0 0 0
e. 5.0 0 0 3+
Q. On which of the following does aldosterone exert its greatest effect?
a. glomerulus
b. proximal tubule
c. thin portion of loop of Henle
d. thick portion of look of Henle
e. cortical collecting system
Q. What is the clearance of a substance when its concentration in plasma is 1mg/ml, itsconcentration in urine is 10mg/ml and the urine flow is 2ml/min?
a. 2ml/min
b. 10ml/min
c. 20ml/min
d. 200ml/min
e. clearance cannot be determined from the information given
Q. Glucose reabsorption occurs in the:
a. proximal tubule
b. loop of Henle
c. distal tubule
d. cortical collecting system
e. medullary collecting system
Q. As urine flow increases during osmotic diuresis:
a. the osmolality of urine falls
b. the osmolality of urine increases
c. the osmolality of urine approaches that of plasma
d. the osmolality of urine is unchanged
e. the osmolality of urine depends primarily on other factors
Q. Which of the following is NOT true regarding the voiding reflex?
a. it involves parasympathetic fibres
b. it remains intact in the period of spinal shock following transaction of the spinalcord
c. it occurs when the bladder volume reaches 300-400mls
d. it is integrated in the sacral segments of the spinal cord
e. its threshold is altered by inhibitory fibres from the brainstem
Q. Which of the following substances is NOT actively secreted in to the tubular lumen by the proximal renal tubule?
a. urate
b. para-amino hippuric acid
c. catecholamines
d. sodium
e. creatinine