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Arteries

Veins

Capillaries

Venules

Arterioles

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Tricuspid valve

Pulmonary valve

Mitral (bicuspid) valve

Aortic valve

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Right atrium

Right ventricle

Left atrium

Left ventricle

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Septum Dividing Heart

Interatrial septum – separates left and right atria

Interventricular septum – separates left and right ventricles

Heart Wall Layers

Endocardium . inner lining

Myocardium .muscular middle layer

Pericardium . outer protective sac