Optic_vesicles

Optic vesicle

Optic vesicle

Sac that protrudes from the embryonic forebrain to form each eye

The eyes begin to develop as a pair of diverticula (pouches) from the lateral aspects of the forebrain. These diverticula make their appearance before the closure of the anterior end of the neural tube;[1][2] after the closure of the tube around the 4th week of development, 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.[3]

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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, which goes on to form the optic nerve.[4][5]

Additional images

  • Head of chick embryo of about thirty-eight hours’ incubation, viewed from the ventral surface. X 26

See also

References

Public domain This article incorporates text in the public domain from page 1001 of the 20th edition of Gray's Anatomy (1918)

Citations

  1. [1]
    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. PMC 4261019. PMID 25458577.
  2. [2]
    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. PMC 6085168. PMID 29432780.
  3. [3]
    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
  4. [4]
    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. PMC 4261019. PMID 25458577.
  5. [5]
    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. PMC 6085168. PMID 29432780.

Sources

  • 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


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