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Heart Anatomy and Functions Explained is a document available to read on EtoBox.

The cardiovascular system consists of the heart and blood vessels. The heart is a hollow muscular organ about the size of a fist located in the chest cavity. It has four chambers - two upper atria and two lower ventricles. The heart pumps blood through two circuits: the pulmonary circuit carries deoxygenated blood to the lungs and the systemic circuit carries oxygenated blood to the rest of the body. Key components of the heart include its valves which ensure one-way blood flow and prevent backflow. The car

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