10 Questions
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.
pulmonary
The heart has ______ contractile ability, which literally means 'muscle generated.'
myogenic
Myogenic contraction of the heart is accomplished through specialized ______ cells.
cardiac Pacemaker
Pacemaker cells spontaneously generate ______ and re-establish the heart rhythm.
action potentials
Pacemaker cells are found in the ______ and AV nodes.
SA
The ______ do not contract at exactly the same time.
chambers
The ______ contract in a coordinated manner, with the atria first, followed by the ventricles.
chambers
Learn about the pathway of electrical signals in the heart's conduction system, from the atrioventricular (AV) bundle to the Purkinje fibers. Understand how these structures facilitate the efficient transmission of signals for proper heart function.
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