Theeyesbegin todevelopas a pair ofdiverticula(pouches) from the lateral aspects of theforebrain.These diverticula make their appearance before the closure of the anterior end of theneural tube;[1][2]after the closure of the tube around the 4th week of development, they are known as theoptic vesicles.Previous studies of optic vesicles suggest that the surrounding extraocular tissues – the surfaceectodermand extraocularmesenchyme– are necessary for normal eye growth and differentiation.[3]
| Optic vesicle | |
|---|---|
 Transverse section of head of chickembryoof forty-eight hours’ incubation. (Optic vesicle labeled at lower right.) | |
 Human embryo about fifteen days old.Brainandheartrepresented from right side.Digestive tubeandyolk sacin median section. (Optic vesicle labeled at center top.) | |
| Details | |
| Carnegie stage | 11 |
| Gives rise to | Human eyes |
| Identifiers | |
| Latin | vesicula optica; vesicula ophthalmica |
| TE | vesicle_by_E5.14.3.4.2.2.4 E5.14.3.4.2.2.4 |
| Anatomical terminology | |
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 theoptic stalk,which goes on to form theoptic nerve.[4][5]
Additional images
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Head of chick embryo of about thirty-eight hours’ incubation, viewed from the ventral surface. X 26
See also
editReferences
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This article incorporates text in thepublic domainfrompage 1001of the 20th edition ofGray's Anatomy(1918)
Citations
edit- ^Hosseini, Hadi S.; Beebe, David C.; Taber, Larry A. (2014)."Mechanical Effects of the Surface Ectoderm on Optic Vesicle Morphogenesis in the Chick Embryo".Journal of Biomechanics.47(16): 3837–3846.doi:10.1016/j.jbiomech.2014.10.018.PMC4261019.PMID25458577.
- ^Hosseini, Hadi S.; Taber, Larry A. (2018)."How mechanical forces shape the developing eye".Progress in Biophysics and Molecular Biology.137(16): 25–36.doi:10.1016/j.pbiomolbio.2018.01.004.PMC6085168.PMID29432780.
- ^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
- ^Hosseini, Hadi S.; Beebe, David C.; Taber, Larry A. (2014)."Mechanical effects of the surface ectoderm on optic vesicle morphogenesis in the chick embryo".Journal of Biomechanics.47(16): 3837–3846.doi:10.1016/j.jbiomech.2014.10.018.PMC4261019.PMID25458577.
- ^Hosseini, Hadi S.; Taber, Larry A. (2018)."How mechanical forces shape the developing eye".Progress in Biophysics and Molecular Biology.137(16): 25–36.doi:10.1016/j.pbiomolbio.2018.01.004.PMC6085168.PMID29432780.
Sources
edit- 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
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