FMST 210 Lecture Notes - Lecture 3: Umbilical Cord, Prenatal Development, Organogenesis
Document Summary
Events and (iii) serious problems (not prenatal care ) in table 1 (p. 71). (b) you also need to know the information related to the italicized words on pp. Unlike the mother"s experience, the three stages of prenatal development are not equal in length. The first 2 weeks are referred to as the germinal stage; weeks 3-8 are referred to as the embryonic stage; weeks 9-38 are referred to as the fetal stage. (a) germinal stage: Day 1: conception: sperm and ovum merge to make a zygote. Day 10-14: implantation: zygote burrows into the lining of the uterus. Specialized cells that become placenta, umbilical cord and embryo are present. Embryonic stage (weeks 3-8): organogenesis: all organs formed during this time. Fetal stage (weeks 9-38): growth and organ refinement. Viability possible by week 24 but require additional 14-16 weeks in womb. Week 28: neurons and connections form following formation.
