Question

In heart, automatic rhythmic impulse generation capability is present in the

• A. S.A. node
• B. A.V. node
• C. Bundle of His
• D. All of the above

Answer 1

The correct option is D All of the above

The human heart is a muscular structure made up of involuntary cardiac tissues. The pacemaker of the heart or the SA node generates an electrical impulse that travels across the heart muscles and results in a heartbeat. Sometimes activity of SA node is decreased by vagus cranial nerve then AV node, Bundle of His and Purkinje fibres together provide Autorhythmicity to the heart.

So, the correct answer is 'All of the above'.