vocabulary
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each of the black spaces below before clicking
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| effective pumps; provides power to transport blood to pulmonary and systemic circulatory system | heart
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| sends blood from heart; must have a fresh supply of oxygen | artery
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| connection between arteries and veins | capilaries
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| to be supplied with blood | oxygenated blood
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| to remove oxygen from | deoxygenated blood
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| double walled membrane; encloses the heart | pericardium
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| found in the pericardium; prevents friction when heart beats | pericardial fluid
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| external layer of the heart | epicardium
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| forms inner surface; lining of the heart | endocardium
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| two upper chambers of the heart | atria
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| two lower chambers of the heart | ventricle
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| seperating walls of portition; located between right and left ventricles | septum
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| narrow tip of the heart | apex
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| gets blood from brain and upper limbs or forelimbs | superior vena cava
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| conveying blood from the left ventricle, of the heart, to all of the body (except for the lungs) | aorta
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| largest vein in the body; drains blood from the trunk and lower limbs or hindlimbs | inferior vena cava
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| carries blood from heart to lungs | pulmonary artery
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| a vessel that carries blood from the lungs to the left atrium of the heart | pulmonary vein
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| oxygen poor blood; deoxygenated | vein
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| middle and thickest layer of the heart layers | myocardium
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| very smooth and has direct contact with blood pumping through heart | endocardium
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| consists of the cardiac muscle | myocardium
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| receives blood from all parts of body; deoxygenated blood | atria
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| transports blood to all body tissues [(A)way ] | arteries
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| walls are thicker than atrial walls; pumps blood to all body tissues | ventricles
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| pumping blood; heart squeezes | contration
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| pumping blood; heart expands | relaxation
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| determines rate and regularity of heartbeat | electrical impulses
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| 1st occurs with closing of tricuspid valve and mitral valve 2nd shorter and higher pitched; occurs with the closing of pulmonary and aortic valves | lubb/ dubb
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| measurement of pressure exerted against walls of vessels | blood pressure
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| occurs when ventricles contract; highest pressure against wall | systolic
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| occurs when ventricles relax; lowest pressure | diastolic
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| 120/80 | normal blood pressure
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