Atrium
Medical term · A
One of the two upper chambers of the heart.
Related terms
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AtriaThe upper chambers of the heart. There are two of these—the right atrium and the left atrium.
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Atrioventricular nodeAlso known as the AV node. A major part of the electrical system in the heart that acts as a gateway between the atria and the ventricles. An electrical signal generated by the…
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AV nodeAbbreviation for atrioventricular node, a major part of the electrical system in the heart that acts as a gateway between the atria and the ventricles. An electrical signal…
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Mitral valveThe valve that controls the one-way flow of blood from the left atrium to the left ventricle.