Chapter 22

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Lesson 38: Childbirth ã Childbirth is a natural process. Thousands of children all over the world are born each day, without complications, in areas where no medical care is available. ã By following a few simple steps, you can effectively assist in the birth process. Introduction Pregnancy ã Pregnancy begins when an egg (ovum) is fertilized by a sperm, forming an embryo. ã The embryo implants itself within the mother’s uterus. ã The embryo is surrounded by the amniotic sac. QuickTimeª and
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    Lesson 38: Childbirth    Introduction ã Childbirth is a natural process.Thousands of children all over theworld are born each day, withoutcomplications, in areas where nomedical care is available. ã By following a few simple steps,you can effectively assist in thebirth process.    Pregnancy   ã Pregnancy begins when an egg (ovum) isfertilized by a sperm, forming an embryo. ã The embryo implants itself within themother’s uterus. ã The embryo is surrounded by theamniotic sac. QuickTimeª and adecompressor    Pregnancy (continued)   ã After about 8 weeks, the embryo is called afetus. ã The embryo receives nutrients from the mother through a specialized organ called the placenta,which is attached to the lining of the uterus. ã The placenta is attached to the fetus by aflexible structure called the umbilical cord.  ã The fetus will continue to develop for approximately 40 weeks, at which time the birthprocess begins.
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