Cardiovascular System

The heart is mainly found behind the right side of the chest wall.

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The heart is surrounded by an inner fibrous and outer serous pericardium.

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The heart is divided into two atria and two ventricles.

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The right side of the heart receives blood from the pulmonary veins.

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The right side of the heart receives blood from the superior and inferior vena cava.

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The aorta arises from the left ventricle.

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There is one pulmonary vein on each side.

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The muscle layer of the left ventricular wall is thinner than that of the left atrium.

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The left atrium receives venous blood from the pulmonary circulation.

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The septum between the left and right atria is the thickest wall in the heart.

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