A portion of cardiac muscle tissue that is part of a right atrium [Automatically generated definition]. [ OBOL:automatic ]
Synonyms: cardiac muscle tissue of right atrium of heart cardiac muscle tissue of right atrium textus muscularis of myocardium of right atrium myocardium of right atrium right atrium myocardium cardiac muscle of heart right atrium textus muscularis of myocardium of right atrium of heart textus muscularis of myocardium of right cardiac atrium cardiac muscle tissue of heart right atrium cardiac muscle of cardiac right atrium right atrium heart muscle