What is the correct path for transmission of an impulse in instrinsic condition system heart?

The correct path for transmission of an impulse in the intrinsic conduction system of the heart is:

1. Sinoatrial node (SA node): The SA node, located in the right atrium, generates the electrical impulse that initiates each heartbeat. It is considered the natural pacemaker of the heart.

2. Atrioventricular node (AV node): The electrical impulse travels from the SA node to the AV node, which is located at the junction of the atria and ventricles. The AV node delays the impulse slightly, allowing the atria to fill with blood before the ventricles contract.

3. Bundle of His: The bundle of His is a group of specialized fibers that connects the AV node to the ventricles. It divides into the left bundle branch and the right bundle branch.

4. Left and right bundle branches: These branches carry the electrical impulse to the left and right ventricles, respectively.

5. Purkinje fibers: The Purkinje fibers are a network of specialized fibers that distribute the electrical impulse throughout the ventricles, causing them to contract in a coordinated manner.

This pathway ensures that the electrical impulse is transmitted in a controlled and sequential manner, resulting in the coordinated contraction of the atria and ventricles, which pumps blood effectively throughout the body.