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Cards In This Set
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The electrocardiogram measures?
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The heart's electrical activity
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The electrocardiograph can do all of the following except?
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Determine perfusion status of the patient
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When an electrical impulse in the heart moves toward a positive electrode, the EKG waveform takes negative deflection.
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FALSE
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The heart acts as the _____ of the circulatory system.
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Pump
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The heart lies?
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On the diaphragm in front of the trachea, esophagus, and thoracic vertebrae
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Which of the following statements regarding the pericardium is accurate?
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The pericardial cavity hold a small amount of clear lubrication fluid
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The myocardium is?
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The thickest of the three layers of the heart
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The upper chambers of the heart are called the?
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Atria
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Functions of the skeleton of the heart include?
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Allowing the top and bottom parts of the heart to act as separate pumps
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The working cells of the heart initiate and carry impulses throughout the heart?
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FALSE
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Automaticity, a property of the heart, is the ability to?
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Produce an electrical impulse without the need for outside nerve stimulation
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Depolarization occurs when?
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There is rapid influx of positively charged ions from outside to inside the cell
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_____ stimulate muscle cells to contract.
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Nerve impulses
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The electrical impulse that normally initiates the heartbeat arises from the?
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SA node
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The impulse traveling through the HIS-Purkinje system generates a _____ on the EKG.
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QRS complex
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