So during the seventh week of pregnancy it seems like quite a bit is going on. First, the baby (still called an embryo) is going through a growth spurt. Before this week, the baby was .52 cm long. By the end of this week, the average length of the embryo is 1.3 cm long. Since baby books seem to love comparing embryos to food, the baby will grow from about the size of a grain of rice to about the size of a blueberry. Developmentally speaking, the arm and leg buds will form slightly more sophisticated forms of hands and feet. Eyelids are beginning to partially form over the baby's eyes (and will be only a half cover for the next week). The baby's brain will continue to grow and the liver will start putting out red blood cells. Also, the umbilical cord, which is apparently a part of the baby's intestines, will pop of the belly and refine itself a bit to resemble what we think of when we hear "umbilical cord".
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