Nasion
Intersection of the frontal bone and two nasal bones of the human skull
The nasion (UK: /ˈneɪziən/ NAY-zee-ən, US: /ˈneɪziɒn/ NAY-zee-on) is the most anterior point of the frontonasal suture that joins the nasal part of the frontal bone and the nasal bones. It marks the midpoint at the intersection of the frontonasal suture with the internasal suture joining the nasal bones. It is visible on the face as a distinctly depressed area directly between the eyes, just superior to the bridge of the nose. It is a cephalometric landmark that is just below the glabella.
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This article is adapted from the Wikipedia article “Nasion”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Gray1198.png by Henry Vandyke Carter, Public domain
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