Week Twenty Three: Sense of balance develops

In the Great Expectations book, it says that Will is about 7 1/2" from crown to rump and weights around 13-16 ounces. His fingernails are almost fully grown, and organ systems are becoming more functional and specialized. He has a distinct pair of lips, and his first canines and molars are developing from hard tissue below his gum line. He looks like a miniature newborn. That just amazes me.