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Extraembryonic Membranes

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Extraembryonic Membranes

Postby vlc1500 » Fri Feb 16, 2007 6:00 pm

Extraembryonic Membranes are vital to the success of reptiles, birds, and mammals. How does this have any relation to the egg and the embryo?
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Postby James » Fri Feb 16, 2007 8:21 pm

Your question is odd. Do you know what an extraembryonic membrane is?
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Re: Extraembryonic Membranes

Postby dipjyoti » Sat Feb 17, 2007 9:53 am

vlc1500 wrote:Extraembryonic Membranes are vital to the success of reptiles, birds, and mammals. How does this have any relation to the egg and the embryo?
. Mean?

Check http://users.rcn.com/jkimball.ma.ultran ... ranes.html to know on it.
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Postby vlc1500 » Sat Feb 17, 2007 9:18 pm

ok this is what i meant to say........
Extraembryonic Membranes are vital to the success of reptiles, birds, and mammals. Discuss with respect to the egg and the embryo.
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Postby dipjyoti » Sun Feb 18, 2007 11:05 am

Extraembryonic Membranes
The embryos of reptiles, birds, and mammals produce 4 extraembryonic membranes:

amnion
yolk sac
chorion, and
allantois
With these four membranes, the developing embryo is able to carry on essential metabolism while sealed within the egg. Surrounded by amniotic fluid, the embryo is kept as moist as a fish embryo in a pond.
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Postby vlc1500 » Wed Mar 07, 2007 1:32 am

does anyone know exactly how the four membranes

amnion
yolk sac
chorion, and
allantois

work to protect the embryo and egg?
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Postby Volvox » Wed Mar 07, 2007 5:28 am

I could answer this for you easily, but I think that you should Google each first and draw your own conclusions. Once you post them here, I will help you.
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