_:b668238909 . _:b668238909 . _:b668238909 . _:b668238909 "Any measurement of the physical form or structure of one or both ventricles of the heart, that is, the lower chambers of the heart that pump blood away from the heart either to the lungs to be oxygenated or, once oxygenated, to the rest of the body."^^ . _:b668238909 "ISBN:978-1416049982"^^ . _:b668238909 "Dorland:Dorlands_Illustrated_Medical_Dictionary--31st_Ed"^^ . _:b668238909 . _:b668238909 "American_Heritage:The_American_Heritage_Medical_Dictionary_2007"^^ .