connected to right cardiac atrium galen:RightAtrium MA:0000075 atrium dextrum BTO:0001703 XAO:0003192 heart right atrium NCIT:C12868 A cardiac atrium that is in the right side of the heart. It receives deoxygenated blood. In mammals, this comes from the superior and inferior vena cava and the coronary sinus, and pumps it into the right ventricle through the tricuspid valve. AAO:0010248 SCTID:244383003 cardiac right atrium right atrium VHOG:0000328 Wikipedia:Right_atrium FMA:7096 right cardiac atrium EMAPA:17321 right atrium of heart EHDAA2:0000290 cardiac atrium blood vasculature right cardiac chamber