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]
Optic vesicle | |
---|---|
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 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
External links
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