Definition of "ventricles" []

• Plural form of ventricle. (noun)

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• "The time during each heartbeat when the ventricles are at rest, filling with blood and not pumping."
• "The dilation of the ventricles is an adaptive technique for the heart to be able to pump more blood when it contracts, but unfortunately, in heart failure the dilation goes beyond the limits of aiding the strength of the contraction."
• "The two lower chambers are called ventricles, and their walls form the chief portion of the muscular substance of the organ."