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Dev. Psych chapter 5
Prenatal Development and Birth
Question | Answer |
---|---|
Conception | *Ova travels from ovary to uterus *Penetration by 1 of 300-500 sperm |
Outcome of conception | Single-celled zygote |
Prenatal Stages | *Germinal period *Embryonic period *Fetal period |
Germinal period | *Days 1-14 *Implantation - one half are successful *Miscarriage - 15% to 50% |
Embryonic period | *3rd to 8th week *Organogenesis - sexual differentiation |
Fetal period | *9th week - birth *Proliferation, Migration *Differentation of stem cells *Ends in tremendous brain development |