1 / 18

From Fetus to Baby!

From Fetus to Baby!. Signs of pregnancy Missing menstrual period Pregnancy tests these tests detect the presence of hCG (human chorionic gonadotrophin ) in the urine hCG is produced by the developing embryo and is present is a woman’s urine only when she is pregnant.

ivrit
Télécharger la présentation

From Fetus to Baby!

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. From Fetus to Baby!

  2. Signs of pregnancy • Missing menstrual period • Pregnancy tests • these tests detect the presence of hCG (human chorionic gonadotrophin) in the urine • hCG is produced by the developing embryo and is present is a woman’s urine only when she is pregnant

  3. Embryo Development & Stages of Pregnancy

  4. First Trimester: (week 1- week 13) • Week 1- 7: “Embryo” • Week 8: “Fetus” • Week 12: • Sex of fetus can be determined • The fetus can move

  5. Second Trimester: (week 14- week 26) • Week 20: • Fetus can hear sounds • Can suck it’s thumb • Hair begins to grow • Use it’s digestive system by swallowing amniotic fluid • Week 24: • Mother can feel the baby moving (kicks from the legs)

  6. Third Trimester: (week 27 – week 40) • Rapid development of the fetus which requires a large quantity of nutrients from the mother  it’s crucial for the mother to eat a healthy diet • Week 28: Fetus can open it’s eyes • Week 32: fetus settles into a head down position in preparation for birth • Week 36: Recognizes mother’s voice

  7. Embryo development & stages of pregnancy Functions of the placenta, umbilical cord • Placenta • Membrane that forms between the mother’s uterus and the developing embryo • Allows for exchanges of nutrients and oxygen between mother and embryo (it serves as a filter) • N.B. Mother’s blood does not enter the embryo • Umbilical cord • connects fetus to the placenta, cut at birth

  8. Functions of amniotic fluid • In the uterus, the fetus is suspended in a fluid called amniotic fluid • This fluid has 3 functions • To protect the fetus from injury • To keep body temperature of the fetus constant • To protect the fetus against dehydration

  9. Identical and fraternal twins • Identical twins (30% of the time) • From a single egg and sperm • Great deal of resemblance • Same chromosomes • Same sex • Same blood type • Fraternal twins (70% of the time) • Two ova, two sperms • Little resemblance

  10. Important factors to consider during pregnancy • Nutrition • Physical exercise • Tobacco • (harmful chemicals pass through the placenta to the fetus) • Alcohol • Fetal alcohol syndrome is characterized by growth, mental, and physical birth defects associated with the mother's high levels of alcohol use during pregnancy • Alcohol ingested by a pregnant woman easily passes across the placental barrier to the fetus

  11. Process of birth

  12. Process of birth • Signs of the onset of labour • Uterine contractions are triggered to begin by the hormone oxytocin secreted by the pituitary gland • Initially are irregular but they become: • More frequent • Stronger • Regular • Rupturing of the amniotic sac (“water breaks”) • As result of the contractions… • Rupture the membrane surrounding the fetus • Cause the amniotic fluid to flow out of the body • It lubricates the baby’s passage out of the body

  13. Process of birth • 4 Stages of labour (8-20 hours) • Dilatation of the cervix (2-20 hours) • The cervix is the lower end of the uterus • It must open to allow the mature fetus to leave the mother’s body • Opens wider over time and with each contraction • Engagement of the baby’s head in the vagina (30 min – 2 hours) • The baby moves through the cervix into the vagina • The baby’s head rotates to help it’s body pass out of the vagina more easily

  14. Process of birth • 4 Stages of labour • Expulsion of the baby (5 to 60 min) • Physician holds the baby’s head and gently eases the shoulders, trunk, and finally the lower limbs out of the mother’s body • Baby’s head might be slightly deformed • Expulsion of the placenta (10-15 min after birth) • Once the baby is born, the contractions continue and cause the placenta to detach and be expelled

  15. Process of birth Different types of delivery • Natural childbirth: with the active participation of the mother, no anesthetic • Caesarean • delivery of a baby through an abdominal incision • performed when a vaginal birth is not possible or is not safe for the mother or child • C-sections have become fairly common • Induced labour: stimulated by the injection of a hormone • Administering of a local anesthetic • Epidural (injection into the spine)

  16. Human Reproduction Test • Female and male anatomy • Know how to label a diagram (* you will not be given a word bank!) • Know functions of all organs • Puberty and hormones • Menstrual Cycle • Stages of development (zygote  embryo  fetus  Baby!) • Process of birth

More Related