The portion of the intrinsic conduction system located in the superior interventricular septum is the a. AV node, b. SA node, c. AV bundle, d. subendocardial conducting network.

Video transcript

Hi, everybody. Welcome back. Let's look at our next question. The bundle of his known as the atrioventricular or A V bundle is a collection of heart muscles specialized for electrical conduction. Where is the bundle of hiss located within the heart? A right atrium b left ventricle c superior enter interventricular septum or D coronary sinus. Well, to get a correct answer, it can help to recall where exactly the bundle of hiss is conducting these electrical impulses and the bundle of his conducts electrical impulses from the atria to the ventricles. So that leads us to its location in c the superior interventricular septum, which is the region between the ventricles. So that bundle of hiss runs passes through this region and then divides to the right and left to take those electrical impulses to the right and left ventricles from the atria. So the it is not in either the right atrium or the left ventricle, it goes between those ventricles. And then when we look at choice d the coronary sinus, this is the vein that drains into the right atrium. So it, it is not running through this vein. So that's not our correct answer. Cross that out. So again, the bundle of his is located in choice c the superior and interventricular septum. See you in the next question.