This week, your baby's nostrils are starting to open up, which gives him the chance to practice breathing using his muscles and lungs. There's no air to take in, of course, so instead he "inhales" and "exhales" amniotic fluid. By the time he's born, he'll be a pro.
What a sucker!
Your baby is also flexing some of his feeding muscles— his lips and mouth. His sucking reflex is so strong that if his hand floats by his face, he'll suck on his thumb or fingers. Ultrasounds often show babies in utero sucking their thumbs. In fact, some babies are born with sucking blisters on their fingers, thumbs, lips, or hands. Sucking is just one of the 70-plus reflexes your baby will have when he's born.
Up for grabs
"Grasping something—like my umbilical cord—is my newest trick." Grasping is another of those many reflexes. If you hold out your finger to a newborn, you'll be amazed by the strength of his clutch. Your baby is practicing his killer grip right now. His favorite pull toy is his umbilical cord, which he likes to yank and tug. Don't worry; the cord is up to the challenge.
Measuring up
Your baby is about 13 inches long and weighs around 1.75 pounds.
