right atrium weight 2010-09-01T08:30:45Z clinical_measurement_ontology VT:0007027 The weight of the right atrium, the upper right chamber of the heart which empties into the lower right chamber, i.e. the right ventricle. Weight is the heaviness or degree to which a body is drawn to the earth by gravity. mshimoyama CMO:0000336 heart right atrium morphological measurement