Which electrical tissue does the bundle of His primarily supply?

Which electrical tissue does the bundle of His primarily supply?

• A. Right ventricle
• B. Both atria
• C. Both ventricles
• D. The left atrium

Answer: (C)

The bundle of His, also known as the atrioventricular bundle, plays a crucial role in the heart's electrical conduction system. It primarily supplies electrical impulses to both ventricles. When the heart's electrical signals travel from the atria to the ventricles, the bundle of His acts as a critical pathway, ensuring that these impulses are conducted efficiently and synchronously.

After receiving signals from the atrioventricular node, the bundle of His transmits the impulses down through the interventricular septum and divides into the right and left bundle branches, which further distribute these impulses throughout the right and left ventricles. This coordinated activity is essential for effective ventricular contraction, allowing for proper blood circulation throughout the body.

By targeting both ventricles, the bundle of His facilitates the vital synchronization needed for the heart to pump effectively, making it a fundamental component of the cardiac conduction system.