Optic vesicle
Optic vesicle | |
---|---|
Transverse section of head of chick embryo of forty-eight hours’ incubation. (Optic vesicle labeled at lower right.) | |
Human embryo about fifteen days old. Brain and heart represented from right side. Digestive tube and yolk sac in median section. (Optic vesicle labeled at center top.) | |
Details | |
Carnegie stage | 11 |
Gives rise to | Human eyes |
Identifiers | |
Latin | vesicula optica; vesicula ophthalmica |
TE | E5.14.3.4.2.2.4 |
Anatomical terminology |
The eyes begin to develop as a pair of diverticula from the lateral aspects of the forebrain. These diverticula make their appearance before the closure of the anterior end of the neural tube; after the closure of the tube they are known as the optic vesicles. Previous studies of optic vesicles suggest that the surrounding extraocular tissues - the surface ectoderm and extraocular mesenchyme - are necessary for normal eye growth and differentiation.[1]
They project toward the sides of the head, and the peripheral part of each expands to form a hollow bulb, while the proximal part remains narrow and constitutes the optic stalk.
Additional images
- Head of chick embryo of about thirty-eight hours’ incubation, viewed from the ventral surface. X 26
References
- ↑ Fuhrmann, S. (2010). Eye Morphogenesis and Patterning of the Optic Vesicle. Current Topics in Developmental Biology Invertebrate and Vertebrate Eye Development, 61-84. doi:10.1016/b978-0-12-385044-7.00003-5
This article incorporates text in the public domain from page 1001 of the 20th edition of Gray's Anatomy (1918)
- Fuhrmann, S. (2010). Eye Morphogenesis and Patterning of the Optic Vesicle. Current Topics in Developmental Biology Invertebrate and Vertebrate Eye Development, 61-84. doi:10.1016/b978-0-12-385044-7.00003-5
External links
- eye-012—Embryo Images at University of North Carolina
- Overview at vision.ca
- Overview at temple.edu
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