PSYC 2110 Chapter Notes - Chapter 4: Syphilis, Morning Sickness, Congenital Disorder

• School: York University
• Department: Psychology
• Course: PSYC 2110
• Professor: Maxine Gallander- Wintre

Document Summary

Prenatal development - development that occurs between the moment of conception and the beginning of the birth process. Germinal period/period of the zygote - first phase of prenatal dev. lasts about two weeks, from conceptions until the zygote (or blastocyst) is implanted in the uterus. B - name given to a ball of cells formed when the fertilized egg first begins to divide. E - name given to the prenatal organism from the third through the eighth week after conception. I - the burrowing of the blastocyst into the lining of the uterus. Period of the embryo - second phase, lasts from the beginning of the third through the eighth week of pregnancy. This is the period where all major organs are formed and some have begun to function. Period of the fetus - third phase, lasts from the ninth prenatal week until birth. All organ systems become integrated in preparation for birth.