Which artery supplies the structures of the neck, face, and scalp?

The external carotid arteries are primarily responsible for supplying blood to the structures of the neck, face, and scalp. This vessel branch from the common carotid artery and gives rise to several important branches that directly nourish the facial area, including the maxillary and superficial temporal arteries, which provide blood to the jaw, cheeks, scalp, and forehead.

The external carotid arteries not only play a crucial role in vascularizing superficial structures but also contribute to the rich blood supply that is necessary for the normal functioning of these regions. In contrast, the internal carotid arteries primarily supply the brain and are not directly involved in providing blood to the face and neck. While small cervical branches of the common carotid and the vertebral arteries do have roles in supplying certain regions, they do not have the extensive distribution that the external carotid arteries provide to the majority of the face and scalp.