PSYC 1010 Chapter Notes -Syphilis, Grey Matter, Miscarriage

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Rebecca Jubis

Document Summary

Development: the sequence of age-related changes that occur as a person progresses from conception to death. Zygote: a one-celled organism formed by the union of a sperm and an egg. Prenatal period: extends from conception to birth; usually encompassing 9 months of pregnancy. This is divided into 3 phases: germinal stage. The first phase of prenatal development, encompassing the first 2 weeks after conception. Within 36 hours, rapid cell division begins. On the 7th day, the cell mass has traveled along the fallopian tube and implants itself on the uterine wall in the uterine cavity. Many zygotes are rejected at this point. 1 in 5 pregnancies end with the woman never being ware that conception has occurred. Placenta begins to form (structure that allows oxygen and nutrients to pass into the fetus from the mother"s bloodstream, and bodily wastes to pass out of the mother: embryonic stage. This stage lasts from 2 weeks until the end of 2 months.