What types of cells are found in the right atrium?

The right atrium contains several distinct cell types, each with specific functions:

Endothelial cells: These cells line the inner surface of the heart, providing a smooth surface for blood flow and playing a role in controlling vascular tone and permeability.
Cardiomyocytes: These specialized muscle cells are responsible for the contractile activity of the heart. They contain abundant mitochondria to meet the high energy demands of continuous contraction.
Fibroblasts: These cells produce and maintain the extracellular matrix, providing structural support to the heart tissue.
Purkinje fibers: Located in the subendocardial layer, these specialized conductive fibers help propagate electrical impulses rapidly across the heart, ensuring coordinated contraction.