
The big news this week is lung development—baby's respiratory system is almost completely mature. That means if baby was born this week, odds are she'd be a healthy bouncing baby with a just a little help from her friends (aka, the NICU). Some of the specifics are:
Baby can now detect light and tell the difference between night and day (of course that ability will miraculously disappear once she's born and up all night screaming). Her pupils will constrict and dilate in response to light.
The bones in baby's skull are soft and are not yet fused together. This pliability allows the bones to overlap; making that trip down the tight birth canal possible.
Baby will continue to pack on the pounds gaining around ½ pound a week from here on out.
Baby weighs about 4½ pounds, as much as a grownup duck, and is approximately 17.5 inches long.














