PSY 213 Chapter Notes - Chapter 4: Fetal Alcohol Spectrum Disorder, Prenatal Development, Neural Tube Defect
Document Summary
Germinal period: the first two weeks of prenatal development after conception, characterized by rapid cell division and the beginning of cell differentiation. Embryonic period: the stage of prenatal development from approximately the third through the eleventh week after conception, during which the basic forms of all body structures, including internal organs, develop. Implantation: the process, beginning about 10 days after conception, in which the developing organism burrows into the placenta that lines the uterus, where it can be nourished and protected as it continues to develop. Embryo: from the third through the eighth week. Embryo: the name for a developing human organism from about the third through the eighth week after conception. Primitive streak: a thin line appears down the middle of the embryo; becomes the neural tube and eventually develop into the cns. Proximo-distal: (cid:862)(cid:374)ea(cid:396) to fa(cid:396)(cid:863); e(cid:454)tremities develop last. Fetus: the name for a developing human organism from the start of the ninth week after conception until birth.
