Your fetus now measures about 4.1 to 4.5 inches from crown to rump and weighs
about 1.75 ounces. Its body is covered by an ultrafine hair, called lanugo,
which is usually shed by birth. Eyebrows and hair on the top of the head are
beginning to grow and his bones are getting harder. He may even be sucking his
thumb by now.
Not only is it pretty incredible how quickly this kid has gone from the size of a pea to almost four-and-a-half inches long, but I'm cracked up by the idea of all of the little hairs. For whatever reason, I'm picturing Captain Caveman from the old USA Cartoon Express. Anyone? Anyone? Maybe it's just me...
