Which artery supplies the lower region of the face and nose?

The artery that supplies the lower region of the face and nose is the facial artery. This artery branches off from the external carotid artery and specifically provides blood supply to various regions of the face, such as the lips, the sides of the nose, and other structures in the lower facial area. Its pathway follows a course from the neck, across the mandible, and into the face, making it crucial for the vascularization of these regions.

While the external carotid artery does supply blood to the face and neck, it serves a broader area and branches into several other arteries, not exclusively the lower face. The internal maxillary artery, on the other hand, primarily supplies deep structures within the face and does not have the same focus on the lower region. External maxillary isn't a commonly recognized term in anatomy, as the facial artery is the more established name for the relevant artery involved in this context. Hence, the facial artery is the most suitable choice for supplying the lower region of the face and nose.