Chapter 10 - Chapter 10 Development Sequence of age related...

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Chapter 10 Development : Sequence of age related changes that occur as a person progresses from conception to death . Prenatal Development Zygote : union of sperm and egg, one-celled organism. Contains all your genes. Prenatal Period : Conception until birth , usually 9 months. Stages First - Germinal Stage : covers two weeks after conception, rapid cell division, along fallopian tube, implants in uterine wall. Placenta: allows oxygen and nutrients to go from mother’s blood and waste to leave. Second - Embryonic Stage : lasting from two weeks until end of month two. Vital organs and systems develop, VERY VUNERALBE. Third - Fetal Stage : Two months until birth. “Age of Viability ”- age at which a baby can survive if prematurely born. Other important things Nutrition=very important Drugs, even prescription Fetal Alcohol Syndrome Rubella, flu, herpes, AIDS- all can be passed on. Maternal hormonal levels and emotions.
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