Arteriosclerosis, Hardening of the arteries, Atrium, The upper chamber of the heart, Septum, The wall that separates the two sides of the heart, Capillary, The smallest and thinnest blood vessel , Bicuspid valve, The valve located between the left atrium and the left ventricle, Tricuspid valve, Te valve located between the right atrium and the right ventricle.

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