Optic vesicle, Biology

Assignment Help:

Optic vesicle

We have explained earlier that the presumptive material for the optic vesicles lies in qe eye field in the anterior region of the early neural plate. Experiments on amphibian embryos have displayed that if at this early open neural plate stage this material is cut out and grafted in the flank of another embryo it forms an eye cup displaying that the cells of eye field are already determined to form the eye. This determination is preceded by induction of the ectoderm to form the neural plate by the invagination chordamesoderm throughout gastrulation.

This is followed by the inductive action of the anterior part of chordamesoderm which comes to be underneath the prospective forebrain region of the neural plate, on the anterior part of neural plate. If this mesoderm is eliminated at this stage the eye field does not split and one median eye is formed. Furthermore, if this anterior chordamesoderm is grafted within the prospective hind brain region of the neural plate it induces an eye field in that region. Continued relation with mesoderm is as well essential for further development of the optic vesicle.


Related Discussions:- Optic vesicle

Mollusca, General characters of mollusca

General characters of mollusca

What are the main human diseases caused by fungi, Q. What are the main huma...

Q. What are the main human diseases caused by fungi? The major human diseases caused by fungi in immunocompetent patients are , blastomycosis, histoplasmosis, paracoccidioidomy

What is a graduated cylinder and how is it used, What is a graduated cylind...

What is a graduated cylinder and how is it used? A graduated cylinder is a piece of laboratory glassware used to accurately calculate out volumes of chemicals for use in reacti

What are disaccharides, Q: What are disaccharides? Although theoretical...

Q: What are disaccharides? Although theoretically disaccharides could be made up of two trioses, tetroses, pentoses but all naturally occurring disaccharides contain hexose mol

Roles of abscisic acid, Roles of Abscisic Acid Abscisic acid (ABA) is ...

Roles of Abscisic Acid Abscisic acid (ABA) is a particularly interesting hormone with regard to the regulation of its own levels. Its levels rise and fall dramatically in seve

Aba - dormancy, ABA - Dormancy Abscisic acid functions as an antagonis...

ABA - Dormancy Abscisic acid functions as an antagonist of all three promoters like IAA, GAS and Cytokinins. ABA nullifies the activity of GA, IAA and cytokinin right by a)

Digestive enzymes, Digestive Enzymes Now let us consider the general p...

Digestive Enzymes Now let us consider the general principles of digestion that are applicable t6all animals. We will start with the digestive enzymes that breakdown the large

Types of neural networks, Types of Neural networks Neural networks can...

Types of Neural networks Neural networks can be grouped into: Sensory filter networks that are organised so as to pass on only certain features of a complex senso

Isomerization of dihydroxyacetone phosphate, Isomerization of dihydroxyacet...

Isomerization of dihydroxyacetone phosphate Isomerization  of  dihydroxyacetone phosphate: Triosephosphate isomerase interconverts  dihydroxyacetone phosphate and  glyceralde

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd