Which part of the cardiac conduction system receives electrical impulses from the bundle branches?

• A. Purkinje fibers
• B. Atrioventricular node
• C. Sinoatrial node
• D. Bundle of His

Answer: (A)

Verified step by step guidance

1. Understand the cardiac conduction system: The heart's electrical system controls the heartbeat, and it consists of several key components including the sinoatrial node, atrioventricular node, bundle of His, bundle branches, and Purkinje fibers.
2. Identify the role of the bundle branches: The bundle branches are part of the pathway that conducts electrical impulses from the atrioventricular node down to the ventricles of the heart.
3. Determine the next step in the conduction pathway: After the electrical impulses travel through the bundle branches, they need to reach the muscle fibers of the ventricles to cause contraction.
4. Recognize the function of Purkinje fibers: The Purkinje fibers are responsible for receiving electrical impulses from the bundle branches and distributing them throughout the ventricles, ensuring coordinated contraction.
5. Conclude the pathway: The Purkinje fibers are the final part of the conduction system that receives impulses from the bundle branches, facilitating the contraction of the ventricles and completing the cardiac cycle.