PSYC 2110 Chapter Notes - Chapter 4: Umbilical Cord, Motor Skill, Postpartum Depression
17 Dec 2017
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Prenatal development: changes that transform the fertilized egg into a newborn human. Period of the zygote (weeks 1-2): begins when the egg is fertilized by the sperm in the fallopian tub. Ends when the egg is implanted in the wall of the uterus, cells have begun to differentiate. Period of the embryo (weeks 3-8): rapid growth, when major body structures are formed. Amniotic sac: embryo rests in it, filled with amniotic fluid that cushions the baby. Period of the fetus (weeks 9-38): size of fetus increases, changes in the body systems are necessary to life. Fetus emits behaviors and responds to stimulation. Mothers should have a balanced diet; calorie intake increases 10-20% Prenatal development can be affected if pregnant mother does not provide adequate nutrition to the baby or experiences stress. Women who report greater anxiety during pregnancy give birth who weigh less than average. Teenagers often have problem pregnancies because they rarely receive adequate prenatal care.
