pericardial branch of thoracic aorta

per·i·car·di·al branch of tho·rac·ic a·or·ta

[TA] small branches of thoracic aorta distributed to the pericardium, in the region of the oblique pericardial sinus, and to posterior mediastinal lymph nodes. Synonym(s): rami pericardiaci aortae thoracicae [TA]