APch13
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| Sends oxygen-depleted blood to the lungs to pick up oxygen and unload carbon dioxide | Pulmonary ciruit
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| Sends oxygen-rich blood and nutrients to all body cells and removes waste | Systemic circuit
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| The heart is within the_______ | Mediastinum
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| Encloses the heart and the proximal ends of the large blood vessels to which it attaches | Pericardium
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| Outer layer of the wall of the heart that protects the heart by reducing friction | Epicardium
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| Thick middle layer of the wall of the heart | Myocardium
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| Inner layer of the wall of the heart | Endocardium
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| Upper chambers of the heart that recieve blood returning to the heart | Atria
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| Lower chambers of the heart that recieve blood from the atria and contract to force blood out of heart into arteries | Ventricles
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| Separates the atrium and ventricle on the right side from their counterparts on the left | Septum
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| Opening between right atrium and right ventricle | Tricuspid valve
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| Entrance to pulmonary trunk | Pulmonary valve
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| Opening between left atrium and left ventricle | Mitral valve (Bicuspid)
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| Entrance to aorta | Aortic valve
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| Supply blood to the tissues of the heart | Coronary arteries
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| Phase of the cardiac cycle when a heart chamber wall contracts | Systole
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| Phase of the cardiac cycle when a heart chamber wall relaxes | Diastole
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| A mass of merging cells that function as a unit | Functional syncytium
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| Coordinates the events of the cardiac cycle | Cardiac conduction system
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| A decrease in the diameter of a blood vessel | Vasocolstriction
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| An increase in the diameter of a blood vessel | Vasodilation
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| Carries blood under relatively high pressure from heart to arteioles | Artery
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| Connects an artery to a capillary | Arteriole
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| Connects an arteriole to a venule | Capillary
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| Connects a capillary to a vein | Venule
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| Carries blood under relatively low pressure from a venule to the heart | Veins
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| The volume of blood discharged from the ventricle with each contraction | Stroke volume
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| The volume discharged from the ventricle per minute | Cardiac output
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| Equals the sum of the formed elements and plasma volumes in the vascular system | Blood volume
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| A force produced by friction between the blood and the walls of blood vessels | Peripheral resistance
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| The ease with which a fluid's molecule flow past one another | Viscosity
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Created by:
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