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
Identifiers
Latin	vesicula optica; vesicula ophthalmica
Code	TE E5.14.3.4.2.2.4
*Anatomical terminology* [edit on Wikidata]

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.

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

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

External links

eye-012—Embryo Images at University of North Carolina
Overview at vision.ca
Overview at temple.edu

Development of the nervous system

Neurogenesis

General	neural development neurulation neurula Notochord Neuroectoderm Neural plate Neural fold Neural groove Neuropoiesis

Neural crest	Cranial neural crest Cardiac neural crest complex Truncal neural crest

Neural tube	Rostral neuropore Neuromere / Rhombomere Cephalic flexure Pontine flexure Alar plate Basal plate Glioblast Neuroblast Germinal matrix

Eye

Ear

Otic placode
- Otic pit
- Otic vesicle

This article is issued from Wikipedia - version of the Saturday, April 18, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.