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10 Cards in this Set
- Front
- Back
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What is the muscular layer of the heart?
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myocardium
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What is the heart's natural pacemaker?
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sinoatrial node
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What is the relaxing and filling phase of the cardiac cycle?
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diastole
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Blood leaves the heart for the rest of the body through the body's largest artery, the _____.
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aorta
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What is the contracting and pumping phase of the cardiac cycle?
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systole
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The flow of blood from the heart to the rest of the body is _____ circulation.
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systemic
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What is an abnormal rushing or blowing sound produced by valve damage?
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heart murmur
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The _____ arteries carry blood from the heart to the lung.
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pulmonary
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What type of heart failure occurs when the heart ceases beating and instead twitches randomly?
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ventricular fibrillation
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The heart muscles are supplied with blood through the two _____ arteries.
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coronary
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