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Content - Health Encyclopedia - University Of Rochester Medical Center

by Gita Tellez (2025-08-16)

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The guts is the toughest working muscle within the human body. Located almost in the middle of the chest, a wholesome adult coronary heart is the dimensions of a clenched grownup fist. By age 70, the human coronary heart will beat more than 2.5 billion times. The center is always working. It pumps about 2,000 gallons of blood every day. A kid's coronary heart works simply as hard as an adult's coronary heart. In actual fact, at rest, a child's heart may beat up to 130 to 150 occasions a minute. An adult's coronary heart often beats between 60 and a hundred times a minute, at relaxation. The speed at which the heart pumps progressively slows down from start to teen years. The cardiovascular system is made up of the center and blood vessels. It circulates blood all through the body. A wholesome cardiovascular system is significant to supplying the body with oxygen and nutrients. The guts is a big, muscular organ that pumps blood full of oxygen and nutrients via the blood vessels to the physique tissues. Four chambers. The 2 higher chambers are the atria. They obtain and accumulate blood. The 2 lower chambers are the ventricles. They pump blood to different elements of your physique. The proper atrium receives blood from the body. This blood is low in oxygen. That is the blood from the veins. The precise ventricle pumps the blood from the fitting atrium into the lungs to choose up oxygen and take away carbon dioxide. The left atrium receives blood from the lungs. This blood is wealthy in oxygen. The left ventricle pumps the blood from the left atrium out to the body, supplying all organs with oxygen-wealthy blood. 4 valves. The 4 valves are the aortic, pulmonary, mitral, and tricuspid valves. They let blood flow ahead and stop the backward flow.



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