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The heart has 3 layers: epicardium, myocardium, and endocardium

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They are the atrial septum and the ventricular septum. The atrial septum separates the left and right atrium. The ventricular septum separates the left and right ventricles.

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The chambers of the heart maintain your heartbeat. You have 2 main chambers, the upper and lower chambers. The upper chambers are your left and right atrium. The  lower chambers are your right and left ventricle

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There are 4 heart valves which blood passes through. Tricuspid valve is between the right atrium and the right ventricle. The pulmonary valve is in between the right ventricle and the pulmonary artery. The mitral valve is in between the left atrium and the left ventricle. Lastly, the aortic valve is between the left ventricle and the aorta

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Names of the different types of blood vessels

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Names of the different types of blood vessels

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There are 3 different blood vessels. Arteries carry blood away from your heart, veins carry blood to your heart, and capillaries connect arteries and veins. (capillaries are the smallest of the 3)