The cardiac conduction system includes all of the following except a. the SA node. b. the AV nod

step 1 Which of these is not part of the cardiac conduction system? Is it the cordae tendinay, the Peki

The cardiac conduction system includes all of the following...

Key Concepts

Subendocardial Conducting Network (Purkinje Fibers)

The subendocardial conducting network, comprising Purkinje fibers, is responsible for distributing the electrical impulse rapidly and uniformly through the ventricular myocardium. This efficient network contributes to synchronous and forceful ventricular contractions.

Bundle Branches

The bundle branches are part of the second phase in the conduction system. They conduct the electrical impulses rapidly through the interventricular septum to the Purkinje fibers, ensuring coordinated ventricular contraction.

Tendinous Cords (Chordae Tendineae)

Tendinous cords, also known as chordae tendineae, are fibrous structures that anchor the atrioventricular valves to the papillary muscles. Although essential for valve function, they are not involved in the electrical conduction system of the heart.

Sinoatrial (SA) Node

The SA node, located in the right atrium, is the primary pacemaker of the heart. It generates the initial electrical impulses that control the heart rate, making it a crucial component of the cardiac conduction system.

Cardiac Conduction System

The cardiac conduction system is the group of specialized cardiac cells responsible for initiating and propagating the electrical impulses that trigger heart muscle contractions. This system ensures coordinated atrial and ventricular activity necessary for effective blood circulation.

Atrioventricular (AV) Node

The AV node, found at the junction between the atria and ventricles, functions as a critical relay station. It delays the electrical impulse from the SA node, providing time for the atria to complete their contraction before the ventricles contract.

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