Where does the impulse go after the bundle branches?

After the impulse travels through the bundle branches, it continues to the Purkinje fibers. The bundle branches, which are part of the conduction system of the heart, conduct electrical signals from the bundle of His to the left and right sides of the heart.

Once the impulse reaches the Purkinje fibers, it facilitates the rapid distribution of the electrical impulse throughout the ventricles. This ensures that the ventricles contract efficiently and simultaneously, which is crucial for maintaining effective blood flow from the heart to the lungs and the rest of the body. Therefore, the Purkinje fibers play a vital role in the contraction of the ventricles following the electrical signaling initiated in the atria.