<prompt> Upper two posterior intercostal aeries arise from ?AoaSuperior intercostal aeryInternal mammary aeryBronchial aery  <response>: Ans. B Superior intercostal aeryThe 1st and 2nd posterior intercostal aeries arise from the supreme intercostal aery, a branch of the costocervical trunk of the subclan aery. The lower nine aeries are the aoicintercostals, so called because they arise from the back of the thoracic aoa. 