Relations of the brain and middle meningeal artery to the surface of the skull. (Nasion is at #1.)
Side view of head, showing surface relations of bones. (Nasion labeled at center left.)
The nasion (nā′zē än′)[needs IPA] is the intersection of the frontal bone 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. It is a cephalometric landmark that is just inferior to the glabella.
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