Final answer:
The electrical impulse traveling from the Bundle of His will next excite the atrioventricular bundle branches and then the Purkinje fibers, leading to ventricular contraction.
Step-by-step explanation:
After the electrical impulse travels to the Bundle of His, the next stimulation will occur in the atrioventricular bundle branches and subsequently the Purkinje fibers. The atrioventricular bundle, also known as the bundle of His, proceeds through the interventricular septum before dividing into the left and right bundle branches.
The left branch supplies the larger left ventricle and contains two fascicles, whereas the right branch supplies the smaller right ventricle. Both bundle branches then connect with the Purkinje fibers, which carry the impulse to the ventricular myocardium, causing the ventricles to contract.
This passage and the associated conduction of the impulse to the myocardial contractile cells of the ventricles follow a delay at the AV node, ensuring proper sequential contraction of the heart chambers for effective blood pumping.