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Fig. 6. Vertical Section through Head of Foetal Pig, 4 mm long

Magnified about 1,000 times.

Til a vesicle is formed which is known as the lens vesicle, as shown at A, Fig. 6. Then this vesicle hecomes separated from the surface and passes into the secondary optic vesicle (see A, Fig. 7), and eventually forms the lens, which will be described later.

As the lens vesicle passes into the secondary optic vesicle, some of the mesoblastic cells pass upward from below, behind it (see B, Fig. 6), and it is these mesoblastic cells which will eventually multiply and form the vitreous body. It will be remembered that the mesoblast is the middle layer of the three primary layers, first formed in the foetus.


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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
The Embryology Anatomy and Histology of the Eye: Embryology | Anatomy | Histology | Figures

Reference

Brown EJ. The embryology anatomy and histology of the eye. (1906) Chicago: Hazlitt & Walker.


Cite this page: Hill, M.A. (2024, April 18) Embryology Brown006.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Brown006.jpg

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