Inion

Inion

Infobox Bone
Name = Inion
Latin =
GraySubject = 46
GrayPage = 185


Caption = Side view of head, showing surface relations of bones. (Inion visible at center right.)



Caption2 = Occipital bone. Outer surface. (External occipital protuberance visible at top center.)
System =
MeshName =
MeshNumber =
DorlandsPre = i_08
DorlandsSuf = 12452346
The inion is the most prominent projection of the occipital bone at the lower rear part of the skull. The ligamentum nuchae and trapezius muscle attach to it.

The term external occipital protuberance ("protuberantia occipitalis externa") is sometimes used as a synonym, but more precisely the term "inion" refers to the highest point of the external occipital protuberance.

Etymology

The word "inion" is the Greek word for the occipital bone.

Anatolian bump

An Anatolian bump is a protuberance on the back of the skull said to be related to Asian ancestry, it is an unusually large external occipital protuberance.


=Additional

References


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Look at other dictionaries:

  • inión — m. anat. Punto craniométrico que se sitúa en la línea media del cráneo, en el vértice de la protuberancia occipital externa. Medical Dictionary. 2011. inión …   Diccionario médico

  • inion — [injɔ̃] n. m. ÉTYM. 1877, Littré, Suppl., additif; grec inion « occiput ». ❖ ♦ Anat. Protubérance occipitale externe. ⇒ Occiput. || De l inion. ⇒ Iniaque …   Encyclopédie Universelle

  • inion — INIÓN, inioni, s.m. Protuberanţă externă a osului occipital, considerată reper în măsurătorile antropometrice. [pr.: ni on] – Din fr. inione. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98  inión s. m. (sil. ni on), pl. inióni Trimis de siveco …   Dicționar Român

  • ínion — s. m. [Anatomia] Ponto que corresponde à parte mais saliente do osso occipital, usado em craniometria. = ÍNIO • [Brasil] Plural: iníones ou ínions. • [Portugal] Plural: iníones.   ‣ Etimologia: grego iníon, ou, osso occipital …   Dicionário da Língua Portuguesa

  • Inion — In i*on, n. [NL., fr. Gr. ini on the back of the head.] (Anat.) The external occipital protuberance of the skull. [1913 Webster] …   The Collaborative International Dictionary of English

  • Inion — Inion, s. Schädel …   Meyers Großes Konversations-Lexikon

  • inion — [in′ē ən, in′ēän΄] n. [ModL < Gr, the back of the head < is (gen. inos), sinew, muscle, lit., strength, akin to L vis, strength < IE * wīs < base * wei , to strive forward, > L via] the bulging part at the rear of the human skull …   English World dictionary

  • Inion — L inion est le point le plus proéminent de l os occipital, dans la partie inférieure de l arrière du crâne. Le ligamentum nuchae et les trapèzes s attachent sur ou à proximité de cette zone. C est un point crâniométrique utilisé en anthropologie… …   Wikipédia en Français

  • Inion — Die Kraniometrie (lat. cranium „Schädel“ und gr. μέτρον métron „Maß“) ist ein Teilgebiet der Morphometrie und damit der quantitativen Anatomie. Anhand von morphometrischen Schädelmerkmalen lassen sich, sowohl bei Menschen als auch Tieren, z. B.… …   Deutsch Wikipedia

  • inion — /in ee euhn/, n. Craniom. a point at the external occipital protuberance of the skull. [1805 15; < NL < Gk iníon nape of the neck, equiv. to in (s. of ís) fiber, sinew + ion dim. suffix] * * * …   Universalium

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