Chapter 12 Heart.docx

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Exercise Science
ES 207
Scott Wersinger

Chapter 12 Heart121Functions of the Cardiovascular SystemCardiovascular system the heart blood vessels and the bloodFigure 121 Cardiovascular SystemHeart has 2 pumps in 1Pulmonary circulation right sideoPumps blood to the lungs and back to the left side of the heartoBlood flow through the system of blood vessels that carry blood from the right ventricle of the heart to the lungs and back from the lungs to the left atriumSystematic circulation left sideoPumps blood to all other tissues of the body and back to the right side of the heart though vesselsoBlood flow through the system of blood vessels that carry blood from the left ventricle of the heart to the tissues of the body and back from the body to the right atriumFigure 122 Overview of the Circulatory SystemCirculatory system consists of the pulmonary and systematic circulationsFunctions of the heartGenerating blood pressureoContractions of the heart generates blood pressure which is required to force blood through the blood vesselsRouting bloodoThe heart separates the two circulations ensuring the flow of oxygenrich blood to tissuesEnsuring oneway blood flowoValves of the heart ensure this through the heart and blood vesselsRegulating blood supply
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