Physiology of Pregnancy Liu Wei Department of ob& Gy Renji hos pital
Normal Pregnancy Pregnancy The course that, the embryo and the r fetus grow in the maternal body R Stages of pregnancy? 1. Early pregnancy: $12 weeks Mid pregnancy: 213 weeks, 527 weeks 3. Late pregnancy: 228 Weeks 4. Term pregnancy: 237 weeks, <42 weeks
Formation of Embryo atio小 1. Place; oviduct (ampulla) 2 Process capacitation→ acrosome reaction→ penetrate the zona pellucida-> second meiosis -zygote
Formation of Embryo s imolantatroe requirement"° 1) Disappear of zona pellucida 2) Formation of syncytiotrophoblast 3) Synchronized development of blastocyst and endometrium 4)Adequate progesterone
Formation of Embryo 2 Process a 1)morula(day 3 )->enter uterine cavity(day 4) early blastocyst> late blastocyst (day 6-7)>implantation 2)location- adherence- penetration