<prompt> The external carotid artery divides at the level of:Angle of mandibleNeck of mandibleOblique line of thyroid cartilageLower border of cricoid cartilage  <response>: External carotid: It is the one of the terminal branches of common carotid artery and lies anterior to internal carotid artery. External carotid artery starts at the level of upper border of thyroid cartilage, runs upwards and laterally to terminate behind the neck of mandible by dividing into larger maxillary and smaller superficial temporal branches. 