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The endothelium is the medical term meaning lining of the blood vessels, including those of the heart. It is continuous with the endocardium, the inner lining of the heart chambers and heart valves.
The word endocardium means the thin, smooth membrane inside the hearts valves and chambers. It is composed of endothelial cells.
Endocarditis (endo = within + card = heart + itis - inflammation) is a reaction to trauma of the inner membrane of the heart and the heart valves. This trauma is usually due to a viral or bacterial infection or the result of toxins produced by viral or bacterial action in another part of the body. If only a heart valve is inflammed then the word would be "Valvulitis" preceded by the valve name (tricuspid valvulitis).
Teflon (PTFE) lining is the best choice for hydrochloric acid valves.
Veins, arteries or valves
4 valves
Valves prevent the backflow of blood.
Four hollow chambers surrounded by muscle. Two of the chambers have inlet and outlet valves.
Known as Valves.
valves
Valves
They are pairs of chambers inside the heart, which have valves.