So…the mother carries the developing baby for nine months. We know about the tremendous growth and development of the embryo and fetus. Then comes labor.
Pregnancy is the carrying of one or more offspring from fertilization until birth. It is the development of an embryo and fetus from the expectant mother’s point of view.
The pregnant mother plays a critical role in the development of the embryo and fetus. She must avoid toxic substances such as alcohol, which can damage the developing offspring. She must also provide all the nutrients and other substances needed for normal growth and development. Most nutrients are needed in greater amounts by a pregnant woman, but some are especially important, including folic acid (vitamin B9), calcium, iron, and omega-3 fatty acids.
Near the time of birth, the amniotic sac breaks in a gush of fluid. Often when this occurs, women say that their “water broke.” Labor usually begins within a day of this event. Labor involves contractions of the muscular walls of the uterus, which cause the cervix to dilate. With the mother’s help, the contractions eventually push the fetus out of the uterus and through the vagina. After birth, the umbilical cord is cut. The baby can breathe air now that it is no longer in amniotic fluid.
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