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Questions and Answers
What is the role of the atria in the heart?
Which chamber of the heart is responsible for pumping blood out to the body or lungs?
What separates the two layers of the serous pericardium in the heart?
Which structure of the heart produces fluid that lubricates the pericardial cavity?
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In which circuit does the right ventricle of the heart connect to the pulmonary trunk?
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What is the main function of the myocardium in the heart?
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What happens at 0mV during repolarization of the heart?
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What role do Ca++ ions play in the process of muscle contraction?
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Which component of the heart's conduction system has the fastest intrinsic firing rate?
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What is the purpose of placing electrodes on the body in an ECG?
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In an ECG, what does a longer QT interval indicate?
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What is the main purpose of AED's?
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During which phase of the cardiac cycle does systole occur?
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What is the function of myoglobin in heart cells?
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What happens during the T wave in the heart's electrical activity?
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What occurs during atrial systole in the cardiac cycle?
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What is the significance of end systolic volume (ESV) in the cardiac cycle?
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Which heart sound is produced by the closing of the atrioventricular valves?
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What does S2 correspond to in the heart cycle?
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What is the normal range for cardiac output in liters per minute?
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Which factor contributes to an increase in cardiac output?
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What is the formula to calculate cardiac output?
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What is the ejection fraction formula in terms of end-diastolic volume (EDV) and end-systolic volume (ESV)?
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What is the main function of the endothelium in the heart?
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What is the purpose of the fossa ovalis in the heart?
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Which chamber of the heart has a small contractile phase and contains pectinate muscles?
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What is the function of the moderator band in the heart?
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Which valve in the heart has no muscular attachments but makes an audible sound as it closes?
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What is the main role of coronary veins in the heart?
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What is the function of desmosomes in cardiac muscle cells?
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Which structure in the heart serves as the pacemaker and sets the normal cardiac rhythm?
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What is responsible for creating spontaneous depolarization in cardiac conductive cells?
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Which characteristic is unique to cardiac contractile cells during repolarization?
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