The middle superior alveolar artery is an inconstant artery supplying the upper jaw. It is one of the three superior alveolar arteries. When present, it arises from the

infraorbital artery The infraorbital artery is an artery in the head that branches off the maxillary artery, emerging through the infraorbital foramen, just under the orbit of the eye. Course The infraorbital artery appears, from its direction, to be the continuatio ...

and descends upon the lateral wall of the

maxillary sinus The pyramid-shaped maxillary sinus (or antrum of Highmore) is the largest of the paranasal sinuses, and drains into the middle meatus of the nose through the osteomeatal complex.Human Anatomy, Jacobs, Elsevier, 2008, page 209-210 Structure It i ...

, forming anastomotic arcades with the other two superior alveolar arteries of the same side before ending near the

canine tooth In mammalian oral anatomy, the canine teeth, also called cuspids, dog teeth, or (in the context of the upper jaw) fangs, eye teeth, vampire teeth, or vampire fangs, are the relatively long, pointed teeth. They can appear more flattened howeve ...

. It contributes to the arterial supply to the upper/maxillary incisor and canine teeth.

References

Arteries of the head and neck {{Circulatory-stub