| ventricles | Chambers of an organ. For example, the four connected cavities (hollow spaces) in the central brain or the four chambers of the heart. (12 Dec 1998) |
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| ventricles of heart | One of the two lower chambers of the heart. Synonym: ventriculus cordis. (05 Mar 2000) |
| cerebral ventricles | See: lateral ventricle, fourth ventricle, third ventricle, cavity of septum pellucidum. (05 Mar 2000) |
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