File:Sutton1885 fig03.jpg

From Embryology

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Fig. 3. A series of figures to show the disposition of the various nuclei of the human sphenoid bone

The upper figure shows the relation of the centres to the cartilage; the latter in all cases is represented by dots.

In the middle figure the basisphenoiclal nuclei have coalesced, the orbitosphenoids have joined the presphenoids, and the internal pterygoids have joined the alisphenoids.

In the lowest figure the sphenoid bone is represented as at the eighth month of foetal life.

A.S, Alisphenoid; B.S, basisphenoid ; L , lingulae; F, pterygoids ; O.S , orbitosphenoids ; P.S, presphenoid ; O.F, optic foramen ; F.U, foramen rotundum; F.O, foramen ovale; CC, cranio-pharyngeal canal.

The dorsum sellae at this date is cartilaginous, and therefore it is not represented in the figures. The foramen ovale, until some time after birth, is only a notch in the alisphenoid.


Sutton JB. On the development and morphology of the human sphenoid bone. (1885) Proc. Zool. Soc. 308: 577-.

Cite this page: Hill, M.A. (2024, June 22) Embryology Sutton1885 fig03.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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