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

Microbiology, harmful and benificial microbes

harmful and benificial microbes

Aipmt exam, Which book is best for quallifying in aipmt exam and what shoul...

Which book is best for quallifying in aipmt exam and what should be my minimum studying hours???

Theory of embryology - pre-formation theory, PR E FORMATION THEORY - ...

PR E FORMATION THEORY - Proposed by Marcello Malpighi. Studied chick egg and proposed his work in "De ova-incubato". According this different part of embryo previousl

What is the stage of cellular respiration, What is the stage of cellular re...

What is the stage of cellular respiration during which carbon dioxide is liberated? In aerobic cellular respiration the release of carbon dioxide occurs in the transformation o

Dietary management for ulcerative colitis, Q. Dietary Management for ulcera...

Q. Dietary Management for ulcerative colitis? Proper dietary management is important for maintaining a good nutritional status of the patient. Long-term management is generally

Explain flavour binding - protein, Flavour Binding   Some   protein pre...

Flavour Binding   Some   protein preparations, although acceptable from a functional and nutritional stand point, necessitate  a deodorizing step to remove the bound off-flavor

Euthenics, Euthenics : It is the study of improvement of human races by pro...

Euthenics : It is the study of improvement of human races by providing better conditions. Euthenics means human improvement by altering external factors like as education or the co

Parthenogenesis, what are the consequences of parthenogenesis in human life...

what are the consequences of parthenogenesis in human life if humans reproduced through parthenogenesis?

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