PSY 2114 Chapter Notes - Chapter 4: Neural Tube Defect, Spina Bifida, Prenatal Care

• School: University of Ottawa
• Department: Psychology
• Course: PSY 2114
• Professor: Gustavo Gottret

Document Summary

Know apgar scale and point system based on given situation; calculate the apgar score based on situation. The blastocyst is the inner mass of cells that develops during the germinal period. The trophoblast is the outer layer of cells that develops during the germinal period. The trophoblast provides nutrition and support for the embryo. Is divided into 3 periods: the germinal period. The period of prenatal development that takes place in the first 2 weeks after conception. Includes the creation of the zygote, continued cell division, and the attachment of the zygote to the uterine wall. 1 week after conception, the zygote is composed of 100-150 cells. Differentiation occurs as inner and outer layers of the organism are formed. Implantation (attachment of the zygote to the uterine wall) occurs 11-15 days after conception: embryonic period. The period of prenatal development that occurs from 2-8 weeks after conception.