File:Fawcett 1910 fig01.jpg

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Fig. 1. Sagittal section of the head of a 15 mm. embryo==

The basilar plate (B.P.) is shown extending from behind forwards over the roof of the oropharynx and perforated from behind forwards and above downwards by the notochord (N.C.), and the plate is seen to end at a bridge of loose connective tissue, which, though not identical here in position with that mentioned by Levi and others, may be taken as being a more advanced condition. S. represents the clivus region of the sphenoid; P. the hypophysis and pituitary; T. is the tongue; and L. the side of the larynx.


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  • A. Anterior limb of ala orbitalis forming anterior wall of optic foramen.
  • P. Posterior limb of ala orbitalis forming the posterior and inner walls of the optic foramen.
  • S.E.C. The spheno-ethmoidal cartilage.
  • A.O. Outer end of the spheno-ethmoidal cartilage extending into the temporal fosa.
  • I.O.N. Infraorbital nerve.
  • M.G. Meckel's ganglion.
  • A.T. Ala temporalis.
  • M. Maxilla.
  • N.C. Nasal capsule.
  • C. Connective tissue in which nasal bone ossifies together with part of the nasal process of the maxilla.
  • L.D. Lacrymal duct.
  • L.N.P. Lateral nasal cartilage (MAlihalkowics). Ma. Malarbone
  • P.P. Parietal plate.
  • F. Frontal bone.


Sphenoid Links: Fig. 1. Fig. 2.


Reference

Fawcett E. Notes on the development of the human sphenoid. (1910) J Anat. Physiol. 44(3): 207-22. PMID 17232842


Cite this page: Hill, M.A. (2024, April 24) Embryology Fawcett 1910 fig01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Fawcett_1910_fig01.jpg

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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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