How is the yolk sac formed, Biology

Assignment Help:

How is the yolk sac formed? What is the function of the yolk sac?

The yolk sac is formed from the covering of the vitellus by some cells originated from the primitive gut.

The yolk sac stores vitellus, the main nourishment source of non-placental embryos.

Image Diversity: yolk sac

 


Related Discussions:- How is the yolk sac formed

Endothelium derived relaxing factors, Vasoactive substances such as Endothe...

Vasoactive substances such as Endothelium Derived Relaxing Factors (EDRF). Prostacyclin and Endothelin can be formed in the vascular endothelium. Endothelial dysfunction can lead t

Symptoms of hiatus hernia, Q. Symptoms of hiatus hernia? In most patien...

Q. Symptoms of hiatus hernia? In most patients, no symptoms are seen. When symptoms do occur, they are: 1. discomfort after heavy meal, 2. Difficulty in breathing while l

Energy requirements of school children and adolescents, Determine Energy re...

Determine Energy requirements of school children and adolescents? Table depicts the energy requirements of school children and adolescents,  as recommended by ICMR (1990).

Genetically modified foods-maize, Normal 0 false false fals...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Explain enzymes, Explain Enzymes Enzymes are the proteins that  act  ...

Explain Enzymes Enzymes are the proteins that  act  as  catalysts,  speeding the  rate  at which biochemical reactions proceed but not altering  the direction or nature of th

State about osteogenesis, State about osteogenesis Embryologically, ost...

State about osteogenesis Embryologically, osteogenesis may be classified as either intramembranous or endochondral. When the ossification occurs directly, it is defined as intr

Show very low level of lactase activity, Q. Show Very low level of lactase ...

Q. Show Very low level of lactase activity? Very low level of lactase activity: at very low level of lactase activity all milk products must be eliminated, substitutes of milk

Show subkingdoms into which the plant kingdom is divided, Q. What are the s...

Q. What are the subkingdoms into which the plant kingdom is divided? The kingdom Plantae is divided into two big subkingdoms: the tracheophytes and the bryophytes (gymnosperms,

Discuss briefly the color reactions of proteins, Question 1 List various m...

Question 1 List various methods used for determination of blood glucose. Explain the principle of each test. Add a note on advantages and disadvantages of each method Question

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