Nasion

{{Short description|Intersection of the frontal bone and two nasal bones of the human skull}} {{Infobox anatomy | Name = Nasion | Latin = nasion | Greek = | Image = Gray1198.png | Caption = Relations of the brain and middle meningeal artery to the surface of the skull. (Nasion is at #1.) | Width = | Image2 = Nasion.PNG | Caption2 = Side view of head, showing surface relations of bones. (Nasion labeled at center left.) | Precursor = | System = | Artery = | Vein = | Nerve = | Lymph = }} The '''nasion''' ({{IPAc-en|UK|ˈ|n|eɪ|z|i|ə|n}} {{respell|NAY|zee|ən}}, {{IPAc-en|US|ˈ|n|eɪ|z|i|ɒ|n}} {{respell|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.<ref name="Collins">{{cite dictionary |entry=nasion |title=Collins English Dictionary |entry-url=https://www.collinsdictionary.com/us/dictionary/english/nasion |publisher=HarperCollins Publishers |accessdate=9 February 2026}}</ref> 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.<ref name="Angle">{{cite journal |last=Yen |first=Peter K.J. |date=January 1960 |place=Boston, Massachusetts |title=Identification Of Landmarks In Cephalometric Radiographs |url=https://angle-orthodontist.kglmeridian.com/view/journals/angl/30/1/article-p35.xml |journal=The Angle Orthodontist |volume=30 |issue=1 |publication-place=Appleton, Wisconsin |publisher=Edward H. Angle Society of Orthodontia |pages=35-41 |url-status=live |archive-url=https://archive.org/details/sim_angle-orthodontist_1960-01_30_1/page/n38/ |archive-date=2 February 2021}}</ref>

==References== {{Reflist}}

Category:Facial features