PSY100Y5 Chapter Notes - Chapter 11: Fetal Alcohol Spectrum Disorder, Prenatal Development, Erik Erikson
13
PSY100Y5 Full Course Notes
Verified Note
13 documents
Document Summary
The sequence of age-related changes that occur as a person progresses from conception to death. Zygote: one-celled organism formed by the union of a sperm and egg. Prenatal period: extends from conception to birth, usually encompassing nine months of pregnancy. Germinal stage: first phase of prenatal development, encompassing the first two weeks after conception. Placenta: structure that allows oxygen and nutrients to pass into the fetus from the mothers bloodstream, and bodily wastes to pass out to the mother. Embryonic stage: second stage of prenatal development, lasting from 2 weeks until the end of the second month. Fetal stage: third stage of prenatal development, lasting from 2 months through birth. Age of variability: the age at which a baby can survive in the event of premature birth, 23 weeks survival is slim (10-20%, 75% at 26 weeks. Teratogens: any external agents (drugs or virus) that can harm an embryo or fetus.
