thymic branches of internal thoracic artery thymic branches of internal thoracic artery the thymic branches of internal thoracic artery are arteries that supply the thymus. thymic branches of internal thoracic arterydetailssourceinternal thoracic arteryveinthymic veinssuppliesthymusidentifierslatinrami thymici arteriae thoracicae internaeta98a12.2.08.031ta24578fma71514anatomical terminology