Conduction Pathway of the Heart

Flashcards created based on the lecture notes on the conduction pathways of the heart, focusing on the key components and their functions.

SA Node

The pacemaker of the heart located in the posterior superior wall of the right atrium; generates impulses that start each heartbeat.

AV Node

Located at the base of the interatrial septum; slows down the impulse allowing the atrial chambers to finish contracting before passing it on.

Bundle of His

Also known as the AV Bundle; located in the upper interventricular septum, transmits impulses from the AV node to the bundle branches.

Right and Left Bundle Branches

Located in the lower intraventricular septum; they conduct impulses from the Bundle of His to the ventricles.

Impulse

An electrical signal generated by cells in the SA node that initiates each heartbeat and travels through the conduction pathway.