LE cardio vocab
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Circulation | the transport of materials throughout the body
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Atria | upper chambers of the heart
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Ventricle | lower chambers of the heart
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Septum | muscle dividing the right and left sides of the heart
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Atrioventricular valves | valves between the atria and ventricles; control blood flow from atria to ventricle
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Superior vena cava | large vein that drains upper part of body into heart (right atria)
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Inferior vena cava | large vein that drains lower part of body into heart (right atria
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Aorta | largest artery through which blood leaves heart (from left ventricle)
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Pulmonary artery | artery that takes blood from right ventricle to lungs; only artery that carries deoxygenated blood
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Pulmonary vein | vein that takes blood from lungs to left atria; only vein that carries oxygenated blood
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Arteries | carry oxygenated blood away from heart to body cells; under pressure
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Veins | carry deoxygenated blood to the heart; no pressure; contains valves
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Capillaries | single celled thick vessels that connect arteries & veins; exchange of materials occurs here
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Oxygenated | contains oxygen
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Deoxygenated | does not contain oxygen; usually contains CO2
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Diffusion | passive transport from an area of high concentration to low concentration
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Plasma | liquid portion of the blood
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Red blood cells | carry O2 in form of hemoglobin; mature cells do not contain nucleus
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White blood cells | used in immune response; fight pathogens
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Platelets | used for blood clotting
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Lymph | fluid found in lymph vessels
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Intercellular fluid | ICF – fluid found around cells
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Coronary circulation | circulation within the heart muscle
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Pulmonary circulation | circulation between the heart and lungs
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Systemic circulation | circulation between heart and body cells
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myocardial infarction | heart attack
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high blood pressure | disease can lead to heart disease; increased pressure requires the heart to pump more strongly
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anemia | lack of iron which results in lack of O2 carried by blood; fatigue common symptom
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congestive heart failure | when heart stops pumping; usually due to fluid around the heart or lungs
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hemophilia | blood disease due to a lack of platelets & blood clotting factors; blood cannot clot properly
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