Sunday, March 16, 2008

Week 23: Lungs prepare for life outside the womb

Your baby's lungs are beginning to produce surfactant, the substance that allows the air sacs in the lungs to inflate — and keeps them from collapsing and sticking together when they deflate. "Practice" breathing moves amniotic fluid in and out of your baby's lungs.

Your baby will begin to look more like a newborn as the skin becomes less transparent and fat production kicks into high gear.


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