From where does the Bundle of His arise?

From where does the Bundle of His arise?

• A. From the left ventricle
• B. From the AV node
• C. From the SA node
• D. From the right atrium

Answer: (B)

The Bundle of His arises from the AV node, which is a crucial part of the heart's conduction system. The AV node, located at the junction of the atria and ventricles, serves as a critical relay point that receives electrical impulses from the sinoatrial (SA) node and conducts them to the ventricles via the Bundle of His. This arrangement ensures that the contraction of the ventricles occurs in a coordinated manner after the atria have contracted and pushed blood into the ventricles. Understanding this pathway highlights the significance of the AV node in maintaining the rhythmic contractions of the heart and underscores its role in preventing arrhythmias that can arise from improper conduction.

The Bundle of His arises from the AV node, which is a crucial part of the heart's conduction system. The AV node, located at the junction of the atria and ventricles, serves as a critical relay point that receives electrical impulses from the sinoatrial (SA) node and conducts them to the ventricles via the Bundle of His. This arrangement ensures that the contraction of the ventricles occurs in a coordinated manner after the atria have contracted and pushed blood into the ventricles. Understanding this pathway highlights the significance of the AV node in maintaining the rhythmic contractions of the heart and underscores its role in preventing arrhythmias that can arise from improper conduction.