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Human Anatomy

Biology

Quiz 21 :

Physiology of the Heart

Quiz 21 :

Physiology of the Heart

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What is the term used to describe the chart produced when recording the electrical activity of heart?
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Answer:

C

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Which heart chamber lacks a group of pacemaker cells?
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Answer:

A

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Which component of the ECG represents the repolarization of the ventricles?
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Answer:

D

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What action causes the first heart sound heard through a stethoscope?
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img -Identify the structure labeled "b."
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Which component of the cardiac conduction system receives action potentials from the sinoatrial node?
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What action causes the second heart sound heard through a stethoscope?
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During the BIOPAC activity, why did the subject's heart rate increase after exercise?
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img -Identify the ECG component labeled "b."
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Which component of the ECG represents the depolarization of the ventricles?
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img -Identify the ECG component labeled "h."
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What is the direct source of the heart sounds in a heart beat?
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If the rate of atrial depolarization was normal while the rate of ventricular depolarization was slower than normal, where would you expect to find a dysfunction in the electrical conduction pathway of the heart?
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img -Identify the structure labeled "e."
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How many electrodes should be attached to the left forearm to record a three-lead ECG?
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What is the first of the deflection waves on a typical ECG?
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Which statement is true regarding the difference between resting and vigorous activity ECGs?
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During the BIOPAC activity, why did the subject's Q-T interval shorten after physical exercise?
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What is the anatomical term for the "pacemaker" of the heart?
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Which component of the cardiac conduction system extends through the interventricular septum toward the apex of the heart?
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