Your heart’s conduction system is the network of nodes (groups of cells that can be either nerve or muscle tissue), specialized cells and electrical signals that keep your heart beating.

The 2 upper chambers of the heart (atria) are stimulated first and contract for a short period of time before the 2 lower chambers of the heart (ventricles). The electrical impulse travels from the sinus …

Jul 18, 2019 · The heart has two nodes that are instrumental in cardiac conduction, which is the electrical system that powers the cardiac cycle. These two nodes are the sinoatrial (SA) node and …

Nov 6, 2025 · The cardiac conduction system is a collection of nodes and specialised conduction cells that initiate and co-ordinate contraction of the heart muscle. It consists of: In this article, we shall look …

Jan 21, 2026 · Key components of the heart's electrical system include the sinus node (SN) and atrioventricular node (AV node). These are part of the heart's two atria and two ventricles.

Electrical signals arising in the SA node (located in the right atrium) stimulate the atria to contract. Then the signals travel to the atrioventricular node (AV node), which is located in the interatrial septum.

May 10, 2020 · An overview of the cardiac conduction system including the sinoatrial node, atrioventricular node, the bundle of His and Purkinje fibres.

Sep 10, 2024 · What Is the Heart Conduction System? The heart conduction system is made up of cells, nodes, and signals that help your heart to beat. In fact, the cardiac conduction system is responsible...

Aug 17, 2023 · Learn in this article the conduction system of the heart, its parts (SA node, Purkinje fibers etc) and its functions. Learn them now at Kenhub!

In the adult human, the node is approximately 1 mm below the epicardium, 10-20 mm long, and up to 5 mm thick [1,16]. Figure 1. The conduction system of the heart. Normal excitation originates in the …