You should start taking it as soon as you find out you're pregnant (even before you get pregnant, if possible). Defects in the "head end" lead to anencephaly, when the bones of the skull do not form properly.įolic acid prevents spina bifida. This will become your baby's brain and spinal cord.ĭefects in one end (the "tail end") of the neural tube lead to spina bifida. ![]() Your baby already has some of its own blood vessels and blood begins to circulate.Ī string of these blood vessels connects you to your baby and will become the umbilical cord.Īt the same time, the embryo's outer layer of cells develops a groove and folds to form a hollow tube called the neural tube. ![]() The heart is forming as a simple tube-like structure. ![]() At this stage, the embryo is around 2mm long. Your baby's nervous system is already developing, and the foundations for its major organs are in place.
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