STANDARDZoology-Human Physiology
STANDARD Zoology Circulatory System MCQ Question
Type: MCQ-conceptual-Medium
Which one is the correct route through which pulse making impulse travels in the heart
A
SA node → Purkinje fibres → Bundle of His → AV node → Heart muscles
B
AV node → SA node → Purkinje fibres → Bundle of His → Heart muscles
C
AV node → Bundle of His → SA node → Purkinje fibres → Heart muscles
D
SA node → AV node → Bundle of His → Purkinje fibres → Heart muscles
Correct Answer
Option D
Detailed Explanation
The conduction system of the heart follows the path: SA node → AV node → Bundle of His → Purkinje fibres → Heart muscles. This sequence ensures the proper timing of heart muscle contractions.
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