chapter 3 ob

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  1. functions of amniotic fluid
    • -allows embryo to move about freely
    • -prevents amnion from adhering to fetus
    • -cushions embryo or fetus from injury
    • -maintains constant temp
    • -provides fluid homeostasis for fetus or embryo
    • provides umbilical  cord compression
  2. hydramniosis is associated with malformations of fetus ____ _____ system and G.I tract
    central nervous system
  3. placental functions
    • protection
    • nutrition
    • resspiration
    • ecretion
    • hormone production
  4. RhoGAM is given to an Rh__ mother at ___ weeks gestation
    • negative
    • 28 weeks
  5. 4 hormones produced by the placenta
    • progeterone
    • estrogen
    • hum chorionic gonadotropin hCG
    • human placental lactogen hPL
  6. ____  can reduce placental blood flow ( uterine atery. ( i'm look for the disorder/ disease
  7. Progesterone is produced by the __ ___ when woman is nor pregnant. WHEN pregnant its produced by the ____.
    • corpus luteum
    • placenta
  8. During pregnancy the progesterone as these functions 4
    maintain uterine lining for implantation of zygote

    reduce uterine contractions

    prepare the glands of the breast for lactation

    stimulate testes to produce testosterone in male fetus & to develop its reproductive tract
  9. Estrogen function during pregnancy
    • uterine growth
    • increase blood flow to uterine vessels
    • stimulate the development of the breast ducts to prepare for lactation
  10. this shunt diverts some blood away from the liver s it returns from the placenta
    ductus venosus
  11. this shunt diverts most blood from the right atrium directly to the left atrium rather than circulating to the lungs
    foramen ovale
  12. diverts most blood  from pulmonary artery into the aorta
    ductus arteriousus
  13. this shunt closes about 2 hrs after birth and permanently in 3 months
    foramen ovale
  14. this shunt closes within 15 hrs and permanently in about 3 weeks
    ductus arteriousus
  15. this shunt closes when the cord is cut and closes permanently in about 1 week
    ductus venosus
  16. the ___ and __ after permanent closure become ligaments
    ductus venosus and arteriousus
  17. what is the organogenesis period
    the most critical time for fetal development, the first 8 weeks
  18. neural tube defects can be prevented through the consumption of
    folic acid
  19. one neural tube defect is ___
    spinal bifida
  20. at the __ week of gestation fetal movement is not felt by the mother
  21. ____ of ___  is when by 20 weeks gestation the fetus may survive outside the uterus
    age of viability
  22. week 4 fetal developement
    • cv: heart pumps blood
    • gi: esophagus and trachea separate and stomach forms
    • nervous: neural tube closes; forebrain forms
    • muscuskeletal: upper and lower limb buds appear
    • senses: ears and eyes begin to form
  23. week 8 fetal development
    • heartbeat is detectable on sonography
    • embryo has human appearance
    • movements occur
    • tail gone
    • external and internal structures formed
    • enters fetal period
  24. week 17 fetal development
    • gennitailia visble leg movements felt by mom
    • bones ossifid
    • eye movement
    • fetus  sucks and swallows amniotic fluid
    • ovaries contain ova
    • no subcutaneous fat
    • thin skin vessels visible
  25. fetus is viableweek 25 fetal development
    • wrinkled skin, lean body, stronger quickning
    • eyes open, ears can hear, lanugo covers body, brown fat formed, vernix caseosa present lungs secrete surfactant, fingernails present, resp movement begin
  26. week 29 fetal development
    fetus assumes stable cephalic position in utero, cns system functions, wrinkles are less b/c of subq fat increased surfactant spleen stops forming blood cells bone marrow take over instead
  27. week 36 fetal development
    sunq fat present, skin pink and smooth grasp reflex present circumference of head and and abd equal, surge of surfactant produced, lanugo decreased
  28. __ and __ are necessary for oxygenation and exchange of waste products
    placenta and vessels
  29. umbilical ___ carries oxygenated blood from placenta to fetus
  30. umbilical __ carry deoxygenated blood from the fetus to the placenta
  31. opening between the right and left atria of the heart during fetal circulation
    foramen ovale
  32. ductus ___ connecting pulmonary aartey to the aorta
  33. ductus __ fetal blood vessel connecting umbilical vein with the inferior vena cava
  34. chromosomes are made up of__
  35. XY chromosome produces a __
  36. XX produces a__
  37. __ prevent kinking of the umbilical cord
    whartons jelly
  38. changes in fetal circulation after/ at birth
    -closing of the ductus arteriosus, ductus venosus and foramen ovale
  39. ___ is how the body grows and replaces dead cells ( 46 chromosomes replicated)
  40. __ is when reproductive cells divde. number in each cell divided by half (23 chromosomes)
  41. amount of amniotic fluid normally present at term
  42. stages of embryonic development in order
    _formation of zygote
    _blastocyst formation
    _morula formation
    • 2-formation of zygote
    • 1-fertilization
    • 4-blastocyst formation
    • 5-implantation
    • 3-morula formation
  43. reduced amount of whartons jelley will likely result in:
    A) low o2 supply to fetus
    B) monozygotic
    C) reduced blood supply to placenta
    D) large than normal fetus
    A) reduced o2 supply
    (this multiple choice question has been scrambled)
  44. primary problem if a newborn is born after 42 weeks gestation
    reduced efficiency to placenta
  45. the fetal heartbeat is first detectable on sonography at week__
Card Set:
chapter 3 ob
2015-01-28 03:43:06

ob ch 3
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