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We know an egg has two membranes,
but do you know WHY there is another “inner” membrane in an egg? …..





Soon after an egg is laid, a small air bubble forms in the large end under the shell.
A membrane separating the mass of the egg and the air bubble
serves as a diaphragm to relieve stress and pressure resulting from thermal changes of temperature.
 
Doesn't it also facilitate the dillosution of oxygen and gasses through the membrane and into the blood vessels. Which one is the Chorion and which is the placenta, is there an amnion?
 
Is someone keeping a secret participant list somewhere? Normally it's page 1. I'm guessing to keep all of the contest guessers guessing?
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Yes, there is a list, but it's not there yet. We're busily focusing on getting the contests going. It will be there soon.
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Doesn't it also facilitate the dillosution of oxygen and gasses through the membrane and into the blood vessels. Which one is the Chorion and which is the placenta, is there an amnion?
Ren there are some amazing reads embryology for sure! and as you wrote above it gets extremely technical as you know, its also yet another defense against bacterial invasion.
 
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