PSY201H5 Chapter Notes -Reinforcement, John Bowlby, Fetus

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Chapter 11: human development across the lifespan: progress before birth: prenatal development, introduction. Development the sequence of age related changes that occur as a person progresses from conception to death. Incl both biological and behavioral changes: zygote a one celled organism formed by the union of a sperm and egg, prenatal period period from conception to birth, aprox. 9 months, marked by rapid development, until tapering off before birth: the course of prenatal development, germinal stage first phase of prenatal development, encompassing the first. 2 weeks after conception: begins when zygote is created through fertilization, placenta structure that allows oxygen and other nutrients to pass into the fetus from the mother"s bloodstream and bodily wastes to pass out to the mother. Incl. hyperactivity, retarded mental and motor development: maternal illness fetus is defenseless against infections because its immune system matures relatively late in the prenatal period.