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9 cze 2024 · It consists of specialized endothelial cells, which are the same type found lining the arteries and veins. The elastic tissue layer consists of smooth muscle, which applies pressure on veins running through the layer, and connective tissue.
The endocardium (pl.: endocardia) is the innermost layer of tissue that lines the chambers of the heart. Its cells are embryologically and biologically similar to the endothelial cells that line blood vessels. The endocardium also provides protection to the valves and heart chambers. [1]
Endocardium is the innermost layer, consisting of endothelial cells covering a basement membrane that consists of extracellular matrix (ECM) proteins [8]. The outermost layer of the heart is the epicardium.
The endocardium has three components: a single layer of flat endothelial cells in direct contact with the blood-filled chamber, a dense inner connective tissue layer, and a loose outer connective tissue layer (Fig. 10.11). The last two layers are sometimes lumped together and referred to as the subendocardium.
2 sty 2023 · The endocardium comprises a single layer of endothelial cells lining the heart chambers. Occasionally, small amounts of smooth muscle can also be in the endocardium. Compared to the right atrium, the left atrium has a thicker endocardium because of high pressure from the pulmonary veins.
The endocardium lines the myocardium and contains Purkinje nerve fibers, which transmit a rhythmic action potential throughout the myocardium leading to contraction. The endocardium is lined by endothelial cells, which modulate many aspects of normal hemostasis.
4 sty 2024 · Endocardium. The innermost layer of the cardiac wall is known as the endocardium. It lines the cavities and valves of the heart. Structurally, the endocardium is comprised of loose connective tissue and simple squamous epithelial tissue – it is similar in its composition to the endothelium which lines the inside of blood vessels.
