| HRAE | high right atrium electrogram |
|---|---|
| LA | lactic acid; large amount; laser angioplasty; late abortion; late antigen; latex agglutination; left... |
| LRA | low right atrium |
| LSRA | low septal right atrium |
| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |
| atrium pulmonale | left atrium of heart |
|---|---|
| atrium sinistrum cordis | left atrium of heart |
| auricle of atrium | A small conical ("ear-shaped") pouch projecting from the upper anterior portion of each atrium of the heart, increasing slightly the atrial volume. See: auricle of left atrium, auricle of right atrium. Synonym: auricula atrialis, atrial auricle, atrial auricula, auricle, auricula, auricular appendage, auricular appendix, skin tag. (05 Mar 2000) |
| auricle of left atrium | The small conical projection from the left atrium of the heart. Synonym: auricula sinistra, left auricular appendage. (05 Mar 2000) |
| auricle of right atrium | The small conical projection from the right atrium of the heart. Synonym: auricula dextra, right auricular appendage. (05 Mar 2000) |
| right atrium | <anatomy> The thin-walled chamber of the heart which pumps blood into the right ventricle for ejection into the pulmonary circulation. (27 Sep 1997) |
| right atrium of heart | Right atrium, the atrium of the right side of the heart which receives the blood from the venae cavae and coronary sinus. Synonym: atrium dextrum cordis. (05 Mar 2000) |
| heart atrium | The upper right and left chambers of the heart. (12 Dec 1998) |
| nasal atrium | The anterior expanded portion of the middle meatus of the nose, just above the vestibule. Synonym: atrium meatus medii, atrium. (05 Mar 2000) |
| oblique vein of left atrium | A small vein on the posterior wall of the left atrium which merges with the great cardiac vein to form the coronary sinus; it is developed from the left common cardinal vein, and occasionally persists as a left superior vena cava. Synonym: vena obliqua atrii sinistri, Marshall's oblique vein. (05 Mar 2000) |
| left atrium | <anatomy> The thin-walled chamber of the heart which pumps blood into the left ventricle for ejection into the systemic circulation. (27 Sep 1997) |