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WorksheetsKidney Function and Nephron Quiz
Total questions: 20
Worksheet time: 10mins
What is the main function of the counter-current mechanism in the kidney?
Filtration
Excretion of urea
Formation of concentrated urine
Buffer regulation
Which part of nephron is responsible for creating the medullary gradient?
Proximal tubule
Distal tubule
Loop of Henle
Collecting duct
Which hormone plays a key role in water reabsorption in the collecting duct?
Aldosterone
Renin
ADH
Erythropoietin
Which of the following is NOT a function of the kidney?
Erythropoietin secretion
Filtration of blood
Vitamin D synthesis
Insulin secretion
What is the full form of JGA?
Juxtaglomerular artery
Juxtaglomerular apparatus
Juxtamedullary apparatus
Jugular glandular apparatus
Which cells secrete renin in the JG apparatus?
Mesangial cells
Macula densa
Juxtaglomerular cells
Podocytes
Macula densa senses the concentration of?
Urea
Potassium
Sodium chloride
Creatinine
Which part of nephron contains the macula densa?
Proximal tubule
Distal tubule
Thick ascending limb
Loop of Henle
What is the main difference between cortical and juxtamedullary nephrons?
Length of loop of Henle
Number of nephrons
Glomerular location
Size of glomerulus
Juxtamedullary nephrons are primarily responsible for?
Filtration
Acid-base balance
Urine dilution
Concentrated urine formation
Which of the following is NOT a peculiar feature of renal circulation?
Two capillary beds
Low oxygen extraction
High blood flow
No autoregulation
Autoregulation of renal blood flow is achieved mainly by?
Baroreceptors
Juxtaglomerular cells
Tubuloglomerular feedback and myogenic response
Chemoreceptors
What is the normal value of GFR in adults?
50 mL/min
75 mL/min
100 mL/min
125 mL/min
Which of the following increases GFR?
Decreased blood pressure
Constriction of afferent arteriole
Dilation of afferent arteriole
Constriction of efferent arteriole
Which of the following substances is used to measure GFR accurately?
Urea
Creatinine
Inulin
Glucose
What is the role of afferent arteriole in GFR regulation?
Constriction decreases GFR
Constriction increases GFR
Dilation decreases GFR
None of the above
Which of the following hormones reduces GFR?
Atrial natriuretic peptide
Renin
ADH
Angiotensin II
Which of the following causes vasoconstriction of efferent arteriole?
ADH
ANP
Angiotensin II
Renin
What is the effect of decreased renal perfusion pressure?
Increased GFR
Decreased GFR
No change in GFR
Increased urine output
Which of the following capillaries are part of the countercurrent exchange?
Glomerular capillaries
Peritubular capillaries
Vasa recta
Interlobular arteries
