Comparison with amphibian gastrulation, Biology

Assignment Help:

Comparison with Amphibian Gastrulation

On comparison of chick gastrulation along with amphibian gastrulation you will find many similarities along with significant differences. Primitive streak is analogous to the blastopore although there is no actual pore. The Hensen's Node presents the dorsal lip and the folds on the lateral sides of primitive groove present the lateral lips. However, there is no ventral lip. As in amphibians, the prechordal endoderm and chorda mesoderm of chick migrate inward by the Hensen's Node (dorsal lip) and the remaining endoderm and mesoderm do so by involution over the lateral folds of the streak (lateral lips). The topographic locations of the presumptive ectodermal, chordarnesodermal; mesodermal and endodermal areas relative to each other in the epiblast are nearly similar as on the surface of amphibian blastula. As in amphibians, the involuting mesodermal and endodermal cells change shape to become bottle cells in the gastrulating chick embryos as well.


Related Discussions:- Comparison with amphibian gastrulation

Explain glucocorticoids, Explain Glucocorticoids The adrenal cortex se...

Explain Glucocorticoids The adrenal cortex secretes the glucocorticoids which  increase gluconeogenesis by increasing hepatic intake of amino acids accompanied by increased ac

Classification of multicellular animals, Classification of Multicellular An...

Classification of Multicellular Animals The multicellular animals (Animalia) originated from the simpler protozoan protists. You know the simpler multicellular animals further

Define starch gelatinisation, Starch Gelatinisation Starch is insolubl...

Starch Gelatinisation Starch is insoluble in cold water but in warm water it swells until its gelatinization temperature begins to lose its structure and leaches out its  8con

Define carcinogenic - dietary factors, Define Carcinogenic - Dietary Factor...

Define Carcinogenic - Dietary Factors? Dietary constituents can also be carcinogenic. But to what extent diet is one of the contributing factors to cancer development is not kn

Chapter-2, multiple choise question

multiple choise question

Rabies, Rabies Rabies, a fatal zoonotic viral disease of dogs, cats, m...

Rabies Rabies, a fatal zoonotic viral disease of dogs, cats, man and other mammals, causes an acute encephalomyelitis. The rabies virus belongs to the genus Lyssavirus in the

Explain poor growth - clinical signs of kwashiorkor, Explain Poor growth - ...

Explain Poor growth - clinical signs of kwashiorkor? Growth retardation is the earliest manifestation of kwashiorkor, the child will be lighter and shorter than its normal peer

Define classification of carbohydrates - oligosaccharides, Define classific...

Define classification of carbohydrates - Oligosaccharides? Oligosaccharides are short chains of saccharide units and are condensation products of three to ten monosaccharides.

Retina, R E TIN A - It is inverted. Innermost, sensitive laye...

R E TIN A - It is inverted. Innermost, sensitive layer. The part of ratina which is attached to choroid is pars optica. The part of retina attached to cilliary b

Human evolution, In the last unit we traced the human evolutionary history ...

In the last unit we traced the human evolutionary history mostly from a palaeontological viewpoint. Although still fragmentary, the available fossil evidence makes it possible to c

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