Nerve · Head

Nasopalatine nerve

Nervus nasopalatinus

A nerve that begins in the nose and finishes in the mouth. It leaves the pterygopalatine ganglion, crosses the roof of the nasal cavity, then runs downward and forward along the nasal septum in a groove on the vomer, supplying the septal lining as it goes. At the bottom it passes through the incisive canal, immediately behind the upper front teeth, and emerges on the palate where the left and right nerves meet in one small shared patch of mucosa. Its territory is therefore the front of the septum inside the nose and the little triangle of palate just behind the incisors — a single nerve crossing the floor of one cavity into the roof of another.