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Questions and Answers
Blood flows from the superior and inferior ______ to the right atrium.
venae cavae
Blood flows from the right atrium through the ______ valve to the right ventricle.
tricuspid
From the right ventricle, blood flows through the ______ valve to the pulmonary artery.
pulmonary semilunar
The oxygenated blood then flows in the ______ vein back to the left atrium of the heart.
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The heart has ______ contractile ability, which literally means 'muscle generated.'
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Myogenic contraction of the heart is accomplished through specialized ______ cells.
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Pacemaker cells spontaneously generate ______ and re-establish the heart rhythm.
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Pacemaker cells are found in the ______ and AV nodes.
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The ______ do not contract at exactly the same time.
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The ______ contract in a coordinated manner, with the atria first, followed by the ventricles.
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