A beating heart pumps blood through the circulatory system, a complex tangle of vessels that carries blood through the body. Arteries, capillaries and veins are three types of blood vessels that provide almost 97,000 kilometers of tubing for blood to flow through. The heart is a complex organ and is susceptible to damage and injury. The most common concerns include heart disease, hypertension, heart attack, stroke, high cholesterol and valve disorders.
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