Optic vesicle
Optic Vesicle
The Optic Vesicle (pronounced: op-tik ves-i-kul) is an essential structure in the early development of the vertebrate visual system. It is a lateral outpouching of the diencephalon that gives rise to the retina and other structures of the eye.
Etymology
The term "optic vesicle" is derived from the Greek words "optikos" meaning "vision" and "vesicula" meaning "small bladder".
Development
The optic vesicle forms during the embryonic development stage. It originates from the neuroectoderm, which is a layer of cells that gives rise to the nervous system. The optic vesicle grows out from the forebrain and makes contact with the surface ectoderm. This contact induces the surface ectoderm to thicken and form the lens placode, which will eventually develop into the lens of the eye.
Related Structures
The optic vesicle further develops into the optic cup, which gives rise to the retina and retinal pigment epithelium. The optic stalk, which connects the optic cup to the brain, develops into the optic nerve.
Related Terms
- Optic Cup
- Optic Stalk
- Retina
- Lens
- Forebrain
- Diencephalon
- Neuroectoderm
- Surface Ectoderm
- Lens Placode
- Retinal Pigment Epithelium
External links
- Medical encyclopedia article on Optic vesicle
- Wikipedia's article - Optic vesicle
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