Free Set
Question
The functional unit of the kidney is:
Options
ANeuron
BNephron Correct Answer
CAlveoli
DGlomerulus
Correct Answer & Explanation
Option B: Nephron
Rationale
The nephron is the structural and functional unit of the kidney responsible for filtration, reabsorption, and secretion during urine formation. Each kidney contains about one million nephrons which regulate fluid balance, electrolyte levels, and removal of metabolic waste products from the blood.
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