上オトガイ棘 - Spina mentalis superior; Spina geni superior

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説明

On the internal surface of body of mandible, near the lower part of the symphysis is a pair of laterally placed spines, termed the superior mental spine (superior genial spine), which give origin to the Genioglossi.

Immediately below these is a second pair of spines, the inferior mental spine (inferior genial spine) or more frequently a median ridge or impression, for the origin of the Geniohyoidei.

In some cases the mental spines are fused to form a single eminence, in others they are absent and their position is indicated merely by an irregularity of the surface.


This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).

解剖学的階層

一般解剖学 > 骨、骨格系 > 軸骨格 > 頭蓋骨;ズガイコツ > 下顎骨 > 下顎体 > 上オトガイ棘

翻訳