23 上頜神經（maxillary nerve）及其分支不支配下列何處？

 上齒槽（superior alveolus） 硬腭黏膜

上頜竇（maxillary sinus）黏膜 鼻根點（nasion）皮膚

ans: naison

The nasion (nā′zē än′) is the intersection of the frontal and two nasal bones of the human skull. Its manifestation on the visible surface of the face is a distinctly depressed area directly between the eyes, just superior to the bridge of the nose.