What is the basic structural and functional microscopic filtration unit of the human kidney?
Answer and explanation
Correct answer: C. Nephron
- Step 1: Each healthy human kidney contains approximately 800,000 to 1.2 million microscopic filtering units called nephrons.
- Step 2: Composed of a renal corpuscle (glomerulus and Bowman's capsule) and a renal tubule (proximal tubule, loop of Henle, distal tubule), the nephron filters blood plasma to form urine.
Answer
Nephron
Why not the others: 'Neuron' A neuron is the fundamental conducting cell of the nervous system; 'Alveolus' An alveolus is the microscopic gas-exchange air sac of the respiratory system; 'Hepatocyte' A hepatocyte is the parenchymal metabolic cell of the liver.
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