Structure of Nephron and Glomerulus — NEET Biology
📚 Practice ConceptEach kidney has nearly one million complex tubular structures called nephrons, which are the functional units. Each nephron has two parts – the glomerulus and the renal tubule. Glomerulus is a tuft of capillaries formed by the afferent arteriole – a fine branch of renal artery. Blood from the glomerulus is carried away by an efferent arteriole.
Assertion (A): Blood flow to and from the glomerulus occurs through different arterioles. Reason (R): The efferent arteriole brings blood to the glomerulus while the afferent arteriole carries blood away.
View solution & NCERT explanation
Correct answer: C — If assertion is true but reason is false.
NCERT states “Glomerulus is a tuft of capillaries formed by the afferent arteriole” and “Blood from the glomerulus is carried away by an efferent arteriole.” The Assertion is true - different arterioles handle inflow and outflow. The Reason swaps their functions - afferent brings blood TO glomerulus, efferent carries blood AWAY, not vice versa. This is a classic confusion point.
What does NCERT say about Each kidney has nearly?
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