right auricle |  superior vena cava | right and left brachiocephalic veins |  aortic arch | brachiocephalic artery |  left common carotid artery |  left subclavian artery. |  pulmonary trunk | right and leftt pulmonary arteries  |  left auricle, like the right, is an external ear-like flap which internally is continuous with the left atrium. |  right coronary artery | one of the marginal arteries |  anterior interventricular artery |  great cardiac vein | apex