Renal Physiology
(MCQ) Questions & Answers
Q1: The cells of the proximal convoluted tubules:
a) have very few mitochondria.
b) have many brush border.
c) responding mainly to ADH.
d) responding mainly to aldosterone.
e) are for reabsorption only.
Q2: The cortical nephrons when compared to the juxtamedullary nephrons cortical
nephrons have:
a) longer loops of Henle.
b) greater numbers
c) vasa recta
d) major role in urine concentration.
e) lower blood supply.
Q3: Renal blood flow:
a) is about 80% of the cardiac output.
b) is more in the medulla than in the cortex.
c) can be calculated if renal plasma flow and GFR are known.
d) is more in the cortex than in the medulla.
e) is usually calculated by inulin clearance.
Q4: The juxtaglomerular cells of the JGA secrete:
a) aldosterone.
b) ADH.
c) angiotensin II.
d) rennin.
e) adrenaline.
1
, Q5: Concerning the juxtaglomerular (JGA) apparatus which of the following is
correct:
a) it is located in the area of contact between the afferent arteriole,
efferent arteriole, and DCT.
b) JG cells act as receptors for NaCl concentration.
c) macula densa cells secrete rennin.
d) its main function is to regulate glucose concentration in the plasma.
e) it is present in the juxtamedullary nephrons only.
Q6: Macula densa:
a) is present in the collecting ducts.
b) secretes rennin.
c) responding to an increase in glucose conc.
d) detects NaCl load.
e) is present in media of afferent arteriole.
Q7: Which of the following is not a function of the kidney:
a) regulation of solutes concentration.
b) production of rennin.
c) production of angiotensin.
d) activation of vitamin D.
e) urine formation.
Q8: All of the following are functions of the kidney except:
a) regulation of acid base balance.
b) production and release of rennin.
c) conversion of angiotensin I into angiotensin II.
d) activation of vitamin D.
e) regulation of the volume and ionic composition of body fluids.
Q9: Rennin hormone is secreted:
a) from juxtaglomerular cells.
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, b) from macula densa cells.
c) from epithelial cells.
d) in response to increased blood flow to the kidney.
e) in response to increased NaCl.
Q10: The function of the kidney includes:
a) regulation of blood pressure.
b) regulation of the volume, composition, and PH of body fluids.
c) control of the rate of RBCs
production. d ) all of the above are
correct.
e) only b & c are correct.
Q11: It is correct to say:
a) inulin clearance equals zero in normal subjects.
b) sodium is reabsorbed actively in the thin part of the ascending limb of
loop of Henle.
c) creatinine is used for the measurement of RPF.
d) loop diuretics are operating through inhibition of ADH action in DCT
and collecting ducts.
e) glucose is actively reabsorbed in the luminal border of the renal tubules.
Q12: The following data were collected from an adult male:
• plasma glucose level = 135 mg/dL.
• concentration of inulin in plasma = 50 mg/dL.
• concentration of inulin in urine = 6000 mg/dL.
• volume of urine collected in 40 minute = 60 ml.
the subject's GFR was:
a) 7200 ml/min.
b) 180 ml/min.
c) 0.5 ml/min.
d) 0.5 L/min.
e) 7.2 L/min.
3
(MCQ) Questions & Answers
Q1: The cells of the proximal convoluted tubules:
a) have very few mitochondria.
b) have many brush border.
c) responding mainly to ADH.
d) responding mainly to aldosterone.
e) are for reabsorption only.
Q2: The cortical nephrons when compared to the juxtamedullary nephrons cortical
nephrons have:
a) longer loops of Henle.
b) greater numbers
c) vasa recta
d) major role in urine concentration.
e) lower blood supply.
Q3: Renal blood flow:
a) is about 80% of the cardiac output.
b) is more in the medulla than in the cortex.
c) can be calculated if renal plasma flow and GFR are known.
d) is more in the cortex than in the medulla.
e) is usually calculated by inulin clearance.
Q4: The juxtaglomerular cells of the JGA secrete:
a) aldosterone.
b) ADH.
c) angiotensin II.
d) rennin.
e) adrenaline.
1
, Q5: Concerning the juxtaglomerular (JGA) apparatus which of the following is
correct:
a) it is located in the area of contact between the afferent arteriole,
efferent arteriole, and DCT.
b) JG cells act as receptors for NaCl concentration.
c) macula densa cells secrete rennin.
d) its main function is to regulate glucose concentration in the plasma.
e) it is present in the juxtamedullary nephrons only.
Q6: Macula densa:
a) is present in the collecting ducts.
b) secretes rennin.
c) responding to an increase in glucose conc.
d) detects NaCl load.
e) is present in media of afferent arteriole.
Q7: Which of the following is not a function of the kidney:
a) regulation of solutes concentration.
b) production of rennin.
c) production of angiotensin.
d) activation of vitamin D.
e) urine formation.
Q8: All of the following are functions of the kidney except:
a) regulation of acid base balance.
b) production and release of rennin.
c) conversion of angiotensin I into angiotensin II.
d) activation of vitamin D.
e) regulation of the volume and ionic composition of body fluids.
Q9: Rennin hormone is secreted:
a) from juxtaglomerular cells.
2
, b) from macula densa cells.
c) from epithelial cells.
d) in response to increased blood flow to the kidney.
e) in response to increased NaCl.
Q10: The function of the kidney includes:
a) regulation of blood pressure.
b) regulation of the volume, composition, and PH of body fluids.
c) control of the rate of RBCs
production. d ) all of the above are
correct.
e) only b & c are correct.
Q11: It is correct to say:
a) inulin clearance equals zero in normal subjects.
b) sodium is reabsorbed actively in the thin part of the ascending limb of
loop of Henle.
c) creatinine is used for the measurement of RPF.
d) loop diuretics are operating through inhibition of ADH action in DCT
and collecting ducts.
e) glucose is actively reabsorbed in the luminal border of the renal tubules.
Q12: The following data were collected from an adult male:
• plasma glucose level = 135 mg/dL.
• concentration of inulin in plasma = 50 mg/dL.
• concentration of inulin in urine = 6000 mg/dL.
• volume of urine collected in 40 minute = 60 ml.
the subject's GFR was:
a) 7200 ml/min.
b) 180 ml/min.
c) 0.5 ml/min.
d) 0.5 L/min.
e) 7.2 L/min.
3
