Lifespan development - chapter 2 - Prenatal Dvlp and Birth Process

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carol87kim
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206334
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Lifespan development - chapter 2 - Prenatal Dvlp and Birth Process
Updated:
2013-03-11 05:05:20
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HCCC lifespan development
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chap 2 - prenatal dvlp and birth process
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  1. Ontogeny Recapitulate Phylogeny
    development of self will go through and revisit all of evolution
  2. 3 periods of prenatal dvlp
    Zygote (Germinal Period ) - first 2 weeks

    Period of the Embryo (3-8 weeks)

    The period of the Fetus - (8 weeks till birth)
  3. Zygote (Germinal Period)
    First two weeks
    zygote (sex cell from sperm and ovum, cell division, and attachment to uterine wall

    sperm ovum are gametes turns into one cell through mitosis

    • Fertilization occurs in egg in fallopian tube
    • corpus luteum produces progesterone to tell body might be pregnant get ready!
    • blastocyst - when cell divides 100 cells
    • blastocyst - attaches to uterus and plantation occurs


  4. Period of Embryo (weeks 3-8)
    • in womb, we develop cephalo(head) first then caudal (feet), proximal (lungs) to distal (arms and legs)
    • cephalo - caudal
    • proximal - distal
    • develop 3 layers of cells
    • 1. Endoderm (inner) digestive tract, liver & lungs
    • 2. Mesoderm (middle) skeletal, muscular, & circulatory system
    • 3. Ectoderm (outer) skin, sense organs, nervous system

    • embryo's 3 layers form:
    • amnion, amnion fluid, umbilical cord, and placenta

    • between baby and mom:
    • what passes through:  oxygen, water, salt, nutrients, carbon dioxide, digestive wastes

    WHAT CANNOT PASS: red blood cells, most bacteria, maternal wastes, hormones
  5. Period of the Fetus (after 8 weeks to  birth)
    at 8 weeks it is a fetus

    age of viability - 25-26 weeks (first time has chance surviving outside the womb)
  6. when does gender occur?
    • we are female before male
    • 4 weeks - undifferiented gonads
    • 7 weeks - testes or ovaries form
    • 12 weeks - fully formed sex organs (penis/uterus)
  7. What is teratogen?
    an environmental agent that disturbs the development of the embryo or fetus and may cause birth defects

    • ex: thalidomide (FDA approved morning sickness)
    • accutane - facial acne
    • drugs
    • evironmental pollutants

    the dose, genetic susceptibility and time of exposure to teratogen influence the damage to fetus
  8. Fetal Alcohol Syndrome
    • flannetened face
    • slow physical growth - premature
    • mental retardation
    • heart defects
    • sleep impairment
  9. cigarettes
    increases risk of SIDS and premature
  10. what is low birth weight and preterm
    low birth weight is less than 5.5 pounds

    preterm - before 35 weeks
  11. 3 stages of birth
    • 1. Labor (12-14 hrs max, 2-5 min)
    • lightening, bloody show, water  breaking

    • 2. delivery
    • crowning

    • 3. afterbirth (10-15 min)
    • placenta umbilical cord expelled
  12. Complications
    Pre-eclamsia fluid retention increased blood pressure

    prolapsed cord

    breech positions


    C section
  13. Otto Rank "Birth Trauma" vs Fred Le Boyer "Gentle Birth"
    • slap
    • cut cord
    • cirumcision

    gentle birth: warm light, skin to skin touch asap
  14. natural child birth / lamaze method
    pavlovian conditioning

    • active participant
    • relaxation techniques
    • breathing exercises
    • a coach
    • no medication
  15. newborns first minutes
    when baby is first born it is wide awake filled w stress hormones

    anoxia - if delivery takes too long, baby doesnt have enough oxygen
  16. APGAR SCALE
    Virginia Apgar - Westfield, NJ

    APGAR score - quick measure how baby is doing

    • heart rate,
    • respiratory effor
    • muscle tone
    • body color
    • reflect irritability

    • score of 3 below - baby not might survive
    • 5 - difficulties
    • 7-10 normal

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