Archives for April 2024

The left bundle branch is located beneath the endocardium. It extends toward the middle of the left ventricle. It divides into smaller bundles and spreads throughout the left ventricle.

The atrioventricular bundle is a bundle of fibres that penetrate the fibrous body to conduct the electrical impulses from the AV node to the ventricles.

The Atrioventricular node is a particular structure of cells located in the right atrium, somewhere near the centre of the heart, in a landmark known as the Triangle of Koch.

The Sinuatrial node or SA node is shaped like a tadpole and is situated in the right atrium near the superior vena cava, in the terminal groove. Multiple interdigitations arise from the SA node, serving for a better connection between the node and the myocardium.

The subendocardial branches or the Purkinje fibres continue the bundle branches like a mesh that lines the subendocardium. The Purkinje fibres interface with the working cardiac muscle cells.