PREGNANCY AND HUMAN DEVELOPMENT Chapter 28
Stages of Development
Accomplishing Fertilization Fertilization=fusion of sperm and egg to produce a zygote Most sperm never make it to the egg! Fertilization requires capacitation
Completion of Meiosis II
Completion of Meiosis II
Zygote
Cleavage
Cleavage
Morula
Blastocyst
Blastocyst
Implantation of the Blastocyst
Placenta Formation and Embryonic Development
Embryonic Membranes Amnion Chorion Allantois Yolk sac
Embryonic Development
Placental Formation
Hormonal Changes
Embryonic Development
Embryonic Development
Fetal Development
Development of Fetal Circulation
Fetal Development
Fetal Development
Fetal Development
Fetal Development
Effects of Pregnancy Anatomical Changes
Effects of Pregnancy Hormonal Changes Human Placental Lactogen (hPL) Human Chorionic Thyrotropin (hCT)
Effects of Pregnancy Physiological Changes Morning sickness Heartburn Constipation Increased urine output Frequency Urgency Stress incontinence Increased respiratory rate Increased vital capacity Dyspnea Decreased residual volume Increased blood volume Edema Hypertension Increased cardiac output
Parturition: Initiation of Labor
Parturition: Stages of Labor
Parturition: Stages of Labor
Parturition: Stages of Labor
Parturition: Stages of Labor
Parturition: Lactation
Homeostatic Imbalance Fetal Alcohol Syndrome Dystocia Spontaneous abortion Induced abortion Eclampsia Ectopic pregnancy Placenta abruption Placenta previa