Auriculo-ventricular openings: are the lateral openings into the heart by means of which the blood is admitted into it. [Please select]
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Auriculo-ventricular: the outer valves of the heart between the auricular space and the chamber. [Please select]
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At the bottom of each auricle is the auriculo-ventricular opening, each provided with a valve to close it when the heart contracts to force the blood into the arteries. [Please select]
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