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PREGNANCY AND HUMAN DEVELOPMENT

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.

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PREGNANCY AND HUMAN DEVELOPMENT

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  1. PREGNANCY ANDHUMANDEVELOPMENT Chapter28

  2. Stages of Development

  3. Accomplishing Fertilization • Fertilization=fusion of sperm and egg to produce a zygote • Most sperm never make it to the egg! • Fertilization requires capacitation

  4. Completion of Meiosis II

  5. Completion of Meiosis II

  6. Zygote

  7. Cleavage

  8. Cleavage

  9. Morula

  10. Blastocyst

  11. Blastocyst

  12. Implantation of the Blastocyst

  13. Placenta Formation and Embryonic Development

  14. Embryonic Membranes • Amnion • Chorion • Allantois • Yolk sac

  15. Embryonic Development

  16. Placental Formation

  17. Hormonal Changes

  18. Embryonic Development

  19. Embryonic Development

  20. Fetal Development

  21. Development of Fetal Circulation

  22. Fetal Development

  23. Fetal Development

  24. Fetal Development

  25. Fetal Development

  26. Effects of PregnancyAnatomical Changes

  27. Effects of PregnancyHormonal Changes • Human Placental Lactogen (hPL) • Human Chorionic Thyrotropin (hCT)

  28. 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 Effects of PregnancyPhysiological Changes

  29. Parturition: Initiation of Labor

  30. Parturition: Stages of Labor

  31. Parturition: Stages of Labor

  32. Parturition: Stages of Labor

  33. Parturition: Stages of Labor

  34. Parturition: Lactation

  35. Homeostatic Imbalance • Fetal Alcohol Syndrome • Dystocia • Spontaneous abortion • Induced abortion • Eclampsia • Ectopic pregnancy • Placenta abruption • Placenta previa

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