Question

Following are the stages of pathway for conduction of an action potential through the heart
A. AV bundle 
B. Purkinje fibres 
C. AV node 
D. Bundle branches 
E. SA node
Choose the correct sequence of pathway from the options given below

• A. E-C-A-D-B
• B. A-E-C-B-D
• C. B-D-E-C-A
• D. E-A-D-B-C

Answer 1

The Correct Option is A

Step 1: The impulse originates at the SA node (E), then travels to the AV node (C).

Step 2: From the AV node, the impulse moves to the AV bundle (A), followed by the Bundle branches (D), and then reaches the Purkinje fibres (B).

Thus, the correct answer is (1) E-C-A-D-B.