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🔬 Biology  ·  Excretory Products and their Elimination  ·  NEET

Glomerular filtration rate (GFR) refers to:

  • A Volume of urine excreted from the bladder per hour
  • B Volume of blood filtered by glomeruli per minute (normal ~125 mL/min)
  • C Rate at which sodium and water are reabsorbed in the proximal tubule
  • D Concentration of glucose spilling into urine during hyperglycemia

Correct answer: B. Volume of blood filtered by glomeruli per minute (normal ~125 mL/min)

Explanation: GFR = volume of fluid filtered from glomerular capillaries into Bowman's capsule per minute. Normal ~125 mL/min (180 L/day). Key kidney function indicator.

Concept context

Nitrogenous waste, kidney structure, urine formation in the nephron, and hormonal regulation of excretion.

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