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The heart is a beating muscle that pumps oxygen-rich blood to the body through a network of arteries and veins. What we commonly call "blood pressure" is the measurement taken when the heart's left ventricle contracts, and blood is forced through the arteries.

As the blood travels from the heart, it exerts pressure against the walls of the arteries. This is referred to as blood pressure. Blood pressure is used to evaluate the force and amount ... more