carotid arch

The carotid arch, more accurately referred to as the aortic arch, is a crucial part of the circulatory system. In human embryos, it's one of a series of paired arterial branches that connect the ventral and dorsal arterial systems. Specifically, the third pair of aortic arches develops into the common carotid arteries, which supply blood to the head and neck. The left common carotid artery originates from the aortic arch, while the right originates from the brachiocephalic trunk, a major branch of the aortic arch. Each common carotid artery then divides into an external and an internal carotid artery, serving different regions of the head.123