NEET · BiologyMedium
Which of the following correctly describes the sequence of electrical impulse conduction in the human heart?
- A.SA node to AV node to Bundle of His to Purkinje fibers
- B.AV node to SA node to Purkinje fibers to Bundle of His
- C.SA node to Purkinje fibers to AV node to Bundle of His
- D.Bundle of His to AV node to SA node to Purkinje fibers
Show correct answer & step-by-step solution
Correct answer: A — SA node to AV node to Bundle of His to Purkinje fibers
Solution
- The sinoatrial (SA) node acts as the pacemaker and initiates the impulse.
- The impulse travels to the atrioventricular (AV) node.
- From the AV node, it passes through the Bundle of His and spreads via Purkinje fibers.
- Hence the answer is (A).
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