ECG Glossary Quiz 4 M - P
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| General term to designate all chemical changes which occur to substances within the body | Metabolism
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| Improper closing of the valve between the left atrail and left ventricle | Mitral insufficiency
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| Narrowing of the valve between the left atrail and left ventricle | Mitral stenosis
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| Of valve of two cusps or triangular segments, located between the left atrail and left ventricle | Mitral valve
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| An operation to widen the opening in the valve between the left atrail and the left ventricle | Mitral valvulotomy
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| An abnormal heart sound heard between the normol lub-dub heart sounds | Murmur
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| Damaging or death of an area of the heart muscle resulting from a reduction in the blood supply reaching that area | Myocardial infarction
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| An inability of the heart muscle to maintain normal circulation | Myocardial insufficiency
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| Inflammation of the heart muscle | Myocarditis
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| The muscular wall of the heart. The thickest of the three layers of the heart wall it lies the middle. | Myocardium
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| A drug which relaxes the muscles in the blood vessels. It is one of the vasodilators | Nitroglycerin
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| An organic compound which produces a rise in blood pressure by constricting the small blood vessels. saometimes used in treatment of shock. Also called noradrenalin & levarterenol | Norepinephrine
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| Surgery performed on the opened heart while the blood stream is diverted through a heart-lung machine | Open Heart Surgery
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| A small mass of specialized cells in the right upper chamber of the heart which give rise to the electrical impulses that initiate contractions of the heart | Pacemaker
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| A fluttering of the heart or abnormal rate of rhythm of the heart experienced by the person himself. | Palpitation
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| Inflammation of the whole heart | Pancarditis
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| Small bundles of muscles in the wall of the lower chambers of the heart to which the cord leading to the cusps of the valves are attched. These contract to hold the valve shut. | Papillary muscles
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| A think membrane sac which surround the heart and roots of the great vessels. It is the outer layer | Parietal pericardium
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| A period of rapid heart beats which begins and ends suddenly | Paroxysmal tachycardia
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| A congenital heart defect in which a small duct does not close after birth. | Patent ductus arteriosus
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| An oval hole between the left & right upper chambers of the heart | Patent foramen ovale
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| Study of the essential nature of disease & the structural & functional changes it causes | Pathology
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| Inflammation of the thin membrane sac which surrounds the heart | Pericarditis
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| A thick membrane sac which surrounds the heart & roots of the great vessels | Pericardium
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| Inflammation of a vein, often in the leg. Sometimes a blood clot is formed in the inflamed vein | Phlebitis
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| The cell-free liquid portion of uncoagulated blood. | Plasma
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| Pertaining to the influence of the mind, emotions, fears etc. upon the functions of the body, especially in relation to disease | Psychosomatic
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| Large artery that conveys unoxgenated (venous) blood from the lower right chamber of the heart of the lungs | Pulmonary artery
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| Valve at the junction of the __________ artery & the right lower chamber of the heart | Pulmonary valve
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| Four veins which conduct oxygenated blood | Pulmonary veins
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| The expansion & contraction of an artery which may be felt with the finger | Pulse
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| The difference between the BP in the arteries when the heart is in contraction (systole) & when it is in relaxation (diastole) | Pulse pressure
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| A pulse in which there is regular alternation of weak & strong beats | Pulsus Alternans
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| Specialized muscular fibers believed to be involved in conducting electrical impulses to the muscle walls of the lower chambers. These electrical impulses are responsible for the contractions of the heart. | Purkinje fibers
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