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I'm having a conceptual problem here. If the placenta is outside the membrane sac and the baby is inside the membrane sac and the cord runs between the baby and the placenta how does it get through the bag of membranes? is the membrane sac open around the cord? how does that work? thanks.
 

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Have you ever seen a placenta? The membrane sac side shows a huge cluster of interconnected veins centering on where the cord is attached. The cord is part of the placenta.<br><br>
Here: <a href="http://en.wikipedia.org/wiki/Image:Human_placenta_both_sides.jpg" target="_blank">http://en.wikipedia.org/wiki/Image:H...both_sides.jpg</a>
 

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<div>Originally Posted by <strong>arcingpath</strong> <a href="/community/forum/post/10292109"><img alt="View Post" class="inlineimg" src="/community/img/forum/go_quote.gif" style="border:0px solid;"></a></div>
<div style="font-style:italic;">I'm having a conceptual problem here. If the placenta is outside the membrane sac and the baby is inside the membrane sac and the cord runs between the baby and the placenta how does it get through the bag of membranes? is the membrane sac open around the cord? how does that work? thanks.</div>
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The cord extends from the baby's abdomen and inserts into the placenta.<br><br><a href="http://blog.lib.umn.edu/socio/kulick/Placenta%20web.JPG" target="_blank">This picture</a> shows a woman holding the placenta (her hands have grabbed it where it was ruptured and baby born through the hole). The baby and cord are inside that (it's sealed and filled with fluid during pregnancy) and the "meaty" side that you can see is what is attached to the uterus.<br><br>
Does that help?
 

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Yeah, the placenta is part of the sac with part on the inside and part on the outside.<br><br>
I did like those pictures, too. It is really cool to see it, and even with all my photos, no one ever remembered to take one of the placenta.
 

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Discussion Starter #5
Wow! Good golly, I had not seen a placenta, even a picture of one. I've read lots of descriptions, but seeing one is a definite eye opener. So if I'm understanding this correctly, the bag of membranes is attached to the placenta (on the side that isn't attached to the uterus).<br><br>
I was picturing the placenta and the baby in its membrane bag as two separate things, attached to one another by the cord, but actually the membrane bag is itself also attached to the placenta. Now this makes sense. Thanks.
 
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