Spine of sphenoid bone

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Spine of sphenoid bone
Gray145.png
Sphenoid bone. Upper surface. (Spina angularis labeled at bottom left.)
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Articulation of the mandible. Medial aspect. (Spine of sphenoid labeled at center top.)
Latin Spina ossis sphenoidalis
Gray's p.150
Anatomical terms of bone

The great wings, or ali-sphenoids, are two strong processes of bone, which arise from the sides of the body, and are curved upward, lateralward, and backward; the posterior part of each projects as a triangular process which fits into the angle between the squama and the petrous portion of the temporal bone and presents at its apex a downwardly directed process, the spina angularis (sphenoidal spine). It serves as the origin for the sphenomandibular ligament.

Base of skull. Inferior surface. Spine of sphenoid bone marked with black circle.

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This article incorporates text from a public domain edition of Gray's Anatomy.