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Your pregnancy: 9 weeks
How your baby's growing:
Your new resident is nearly an inch long — about the size of a grape — and weighs just a fraction of an ounce. She's starting to look more and more human. Her essential body parts are accounted for, though they'll go through plenty of fine-tuning in the coming months. Other changes abound: Your baby's heart finishes dividing into four chambers, and the valves start to form — as do her tiny teeth. The embryonic "tail" is completely gone. Your baby's organs, muscles, and nerves are kicking into gear. The external sex organs are there but won't be distinguishable as male or female for another few weeks. Her eyes are fully formed, but her eyelids are fused shut and won't open until 27 weeks. She has tiny earlobes, and her mouth, nose, and nostrils are more distinct. The placenta is developed enough now to take over most of the critical job of producing hormones. Now that your baby's basic physiology is in place, she's poised for rapid weight gain.
6 comments:
Ok, I shamelessly admit that now that I've been working in a developmental biology lab this completely amazes me! Just think about it, you've only really know for certain for about a week that this little gal/guy even exists and all of her most important parts are already assembled and starting to work- now it's just all gotta grow :) how cool is that!?!
And having said that nerdieness - I now officially volunteer myself to help baby with all future science fair projects :)
LOL...I like it! You can be known as Aunt Nerdy :-)
I do enjoy that the info you're pulling from refers to the baby as a she ;)
ok Becca, hate to out-nerd you here but I believe at this stage the parts aren't distinguishable as male or female and that they all begin the same (and become male if it's a boy) and look more 'female' from the start.
So officially I'm not throwing my bet into the 'she' catagory just yet :)
kathy - i think that becca ment the info that shaun is pulling from the other wedsite says the baby is a she. Not you :-)
haha- ok oops, sorry Becca. I retract my previous comment :)
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