Fig. 464. Model showing lens and formation of optic cup
A piece has been removed from the upper part of cup to show the cavity of the optic vesicle and the position of the inner layer of the cup (nervous layer of retina).
Bonnet calls attention to the fact that the two processes, lens formation and the invagination of the optic vesicle to form the optic cup, are more or less independent and that it is not correct to describe the lens as actually pushing in the outer wall of the vesicle. As evidence of this is noted the fact that typical optic cup formation may occur in cases where no lens is developed. The optic cup when first formed is not a complete cup, for the invagination of the optic vesicle is carried over along the posterior surface of the optic stalk forming the choroidal fissure (Fig. 464, see also p. 545).
- Text-Book of Embryology: Germ cells | Maturation | Fertilization | Amphioxus | Frog | Chick | Mammalian | External body form | Connective tissues and skeletal | Vascular | Muscular | Alimentary tube and organs | Respiratory | Coelom, Diaphragm and Mesenteries | Urogenital | Integumentary | Nervous System | Special Sense | Foetal Membranes | Teratogenesis | Gallery of All Figures
|Historic Disclaimer - information about historic embryology pages|
|Embryology History | Historic Embryology Papers)|
Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.
Cite this page: Hill, M.A. (2019, January 19) Embryology Bailey464.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Bailey464.jpg
- © Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
Click on a date/time to view the file as it appeared at that time.
|current||14:47, 1 February 2011||869 × 592 (67 KB)||S8600021|
- You cannot overwrite this file.