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Yolk sac

yolk sac

(Science: embryology, ornithology) One of the set of extra embryonic membranes, growing out from the gut over the yolk surface, in birds formed from the splanchnopleure, an outer layer of splanchnic mesoderm and an inner layer of endoderm.


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Humans are Deuterostomes. Right?..

... Besides, that primitive groove is somehow connected to the yolk-sac by means of blastopore (again, wiki says). So how did blastopore end up between yolk-sac ...

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by Siroggak
Tue Aug 12, 2014 4:46 pm
 
Forum: Human Biology
Topic: Humans are Deuterostomes. Right?..
Replies: 1
Views: 401

Stem Cells

... which makes an animal immune to a X pathogen, can both be injected into yolk sac or bone marrow. If the tumor developed and animal is protected against infection upon exposure ...

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by Shaanu
Thu May 09, 2013 3:00 pm
 
Forum: Molecular Biology
Topic: Stem Cells
Replies: 0
Views: 1353

Stem Cells

... which makes an animal immune to a X pathogen, can both be injected into yolk sac or bone marrow. If the tumor developed and animal is protected against infection upon exposure ...

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by Shaanu
Thu May 09, 2013 9:45 am
 
Forum: Genetics
Topic: Stem Cells
Replies: 5
Views: 4927

Re: Please help with my work

...  False  if carbohydrate supply is very low, the body will automatically use your proteins  as an energy source.  4d. False found in membrane not yolk 4g False an example of anabolism is the formation of muscle proteins from amino acids. 5 Sodium and Calcium Calcium- needed to maintain strong ...

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by Olympic
Tue Jul 24, 2012 6:47 pm
 
Forum: General Discussion
Topic: Please help with my work
Replies: 6
Views: 9179

Diet Of Laying Birds

the inner liquid is mainly water, proteins (egg white and yolk) and lipids (yolk), nothing that special, what the bird could not produce by itself. But the calcium is more important (or rather more needed to obtain from environment).

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by JackBean
Mon Jan 30, 2012 4:46 pm
 
Forum: Zoology Discussion
Topic: Diet Of Laying Birds
Replies: 13
Views: 6971
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