EKG Certification Exam study guide!! – Flashcards
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Occurs when a patient has a very low potassium level
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U wave
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What complex occurs when th ventricles contract?
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QRS complex
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the heart has ___ valves?
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4
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The two semilunar valves are?
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pulmonic and aortic valves
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Blood returning from the body to the hear enters the?
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right atrium
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The _____ vena cava gets it's blood from the head neck and upper extremities
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superior
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The _____ is the innermost layer of the heart
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endocardium
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_____ ______ ________ is a Condition when the heart cannot meet the demands of the body.
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Congestive heart failure
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the two entrance valves of the heart.
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tricuspid and bicuspid valves
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______ is the fibrous outer fluid filled layer that covers the heartand separates it from the contents in the chest cavity.
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pericardium
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The EKG records the electrical impulses called.
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cardiac cycle
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contraction of the atrium on ekg
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Pwave
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contraction of the ventricles on EKG
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QRS complex
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relaxation of the ventricles on EKG
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T wave
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the right and left atria are know as the
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receiving chambers
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the blood on its way from the left atrium to the left ventricle it goes thro what valve?
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mitral valve
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the only way to oxygenate the blood id through the ____ and _____ in the lungs
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alveoli and capillaries
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the heart is separeted by the _____
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Septum
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the speed of the EKG is normally run is?
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25 sec
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The color of the ground lead is?
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green
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What is the approximate diameter of the coronary arteries?
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1/8 inch
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Another name for the bicuspid valve?
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mitral valve
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What is the purpose of the gel on the electrode?
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conducts electricity
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the coronary arteries give nurishment to the ____.
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myocardium
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The heart is about the size of your____
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fist
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The heart functions as a ____ to pump blood to all the bodys cells.
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pump
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If the blood slupply to the myocardium stops the area that doesn't receive a blood supply ____.
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dies
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What is the thickest layer of the heart?
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myocardium
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The ____ _____ ___ brings blood from below the diaphragm
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inferior vena cava
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_______ is the only vein that carries high oxygen blood
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pulmonary vein
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the term for "rapid heart beat" is
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tachycardia
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left and right coronary arteries supply blood to the hear, flow is considered insuffcient if it cannot meet the needs of the heart.
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Coronary insufficiency
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The purpose of the _______ is to initate the heart beat and regulate the cardiac cycle
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conduction system
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______ heart beats are generated from an impulse orginating some other place than the SA node
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Ectopic
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SA node is located on the upper wall of the _______
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right atrium
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______ fuctions is to generate the stimulus to make the heart beat.
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SA node
