Head to heels, baby M now measures about 13 1/2 inches. Her weight — a pound and a half (more like over 2lbs now) — isn't much more than an average rutabaga, but she's beginning to exchange her long, lean look for some baby fat. As she does, her wrinkled skin will begin to smooth out and she'll start to look more and more like a newborn. She's also growing more hair — and if you could see it, you'd now be able to discern its color and texture. She is growing by leaps and bounds right now. Under her skin, capillaries are forming and filling with blood and by week's end, air sacs (also lined with capillaries) will develop in her lungs, getting them ready for that first breath. Mind you, those lungs aren't ready for prime time just yet — but they are developing surfactant, a substance that will help them expand after birth. And speaking of breathing, your baby's tiny nostrils, which have been plugged up until now, are starting to open, and her vocal chords are getting ready to roar. Only 105 more days to go!
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