PSYCH 140 Module 2, Portage answered questions 100% correct 1 Arteries and veins 7-8 weeks 2 Can respond to sound - 8-9 weeks 3 Thumb sucking - 20 weeks 4 Breathing motions - 22-26 weeks ... 5 Can survive if born - 30 weeks 6 3 periods of prenatal development - germinal, embryonic, fetal 7 Germinal stage - the 2-week period of prenatal development that begins at conception 8 Embryonic stage - 2-8 weeks, layers of cells are formed 9 Fetal period - 2 -7 months after conception 10 Teratogens - agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm 11 Organogenesis - formation of organs 12 Nicotine - SIDS, low birth weight, miscarriage, preterm birth 13 Alcohol - fetal alcohol syndrome, cognitive and learning problems 14 x-rays - gene mutation, possible deformity 15 Herpes - miscarriage, low birth weight, intellectual disability [Show More]
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