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Cards In This Set
| Front | Back |
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The __________ supplies the right atrium and right ventricle with blood.
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Right coronary artery
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Stimulation of para-sympathetic nerve fibers typically results in which action?
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Slowed conduction through the atrio-ventricular node
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The contribution of blood that is added to the ventricles and results from atrial contraction is called?
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Atrial kick
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Which of the following are semilunar valves?
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Aortic and pulmonic
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The left main coronary artery divides into the?
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Anterior descending and circumflex branches
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__________ cells are specialized cells of the electrical conduction system responsible for the spontaneous generation and conduction of electrical impulses?
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Pacemaker
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The absolute refractory period?
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Begins with the onset of the QRS complex and terminates at approximately the apex of the T wave
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Which of the following statements is true regarding the QT interval?
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QT interval represents the time from initial depolarization of the ventricles to the end of ventricular repolarization.
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How do you determine whether the atrial rhythm on an ECG tracing is regular or irregular?
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Compare P to P intervals
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Which of the following ECG leads use two distinct electrodes, one of which is positive and the other negative?
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Leads I, II, III
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In sinus arrhythmia, a gradual decreasing of the heart rate is usually associated with?
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Expiration
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An ECG rhythm strip shows a ventricular rate of 46 bpm, a regular rhythm, a PR interval of 0.14 second, a QRS duration of 0.06 second, and one upright P wave before each QRS is called?
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Sinus Bradycardia
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Sinoatrial block is a disorder of impulse __________ and sinus arrest is a disorder of impulse __________?
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Conduction, formation
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Signs and symptoms experienced during a tachy-dysrhythmia are usually primarily related to?
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Decreased ventricular filling time and stroke volume
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Which correctly reflects examples of ectopic (latent) pacemakers?
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AV Junction and ventricles
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