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Fetal Development

Fetal Development. Month by Month OBJECTIVE: Describe the developmental changes that occur during human gestation. First Month Germinal Stage (first 2 weeks after conception ). The egg is fertilized about week 2 and implanted in the uterus about week 3 Heart and lungs form. First Month.

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Fetal Development

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  1. Fetal Development Month by Month OBJECTIVE: Describe the developmental changes that occur during human gestation.

  2. First MonthGerminal Stage (first 2 weeks after conception ) • The egg is fertilized about week 2 and implanted in the uterus about week 3 • Heart and lungs form

  3. First Month

  4. 2 months**Embryonic Stageweeks 3-8 • By the end of 8 weeks all essential organs form and are in their correct place • **ORGANOGENESIS- The process of organ formation and growth • Eyes and ears start to form • Fingers and toes; wrists and ankles start to develop • Measures about 1inch and weighs less than 1 ounce.

  5. Two Months

  6. 3 monthsFetal Stage • The developing baby is now called a Fetus-which lasts the duration of the pregnancy • Soft nails appear on fingers and toes • Heartbeat can be heard with a Doppler listening device • Tooth buds develop END OF 1STTRIMESTER (Weeks1-14)

  7. 4 Months (Week 14-18)2nd trimester! • The placenta is fully formed and carries all nutrients to the fetus, takes away wastes, and issues most of the hormones that maintain pregnancy • Fetus is developing sucking and swallowing reflexes • Kidneys are able to produce urine • Eyebrows and eyelashes start to grow

  8. 4 months

  9. Five Months • A protective coating called vernixbegins to form on fetus’ skin. • Fetus sleeps and wakes on a regular cycle • External sex organs are well-developed and might be seen on an ultrasound • The fetus’ movements become more active and can be felt by the mother

  10. Six Months • Eyelids are formed and functioning- eyes can open for short periods of time • Baby’s skin is covered in a soft downy hair called lanugo and a waxy white protective coating called vernix. • With intensive care, a fetus might be able to survive if born during this month.

  11. 6 Months

  12. Seven Months3rd Trimester! (Weeks 27-40) • The fetus can sense light and sound and will respond! • The fetus many hiccup, producing rhythmic movements in the uterus • The mother may start to produce and leak colostrum. • Mother may also notice Braxton-Hicks contractions which are “practice” contractions that prepare the body for labor.

  13. 7 Months

  14. Eight Months • Rapid brain growth occurs at this time • Bones continue to harden, but the skull remains soft and pliable for labor • The fetus is rapidly storing body fat for warmth and energy • The fetus has less room to move around so movements are less forceful on the mother

  15. 8 months

  16. Nine Months • 36-37 weeks is considered full term • The lungs can function on their own • The baby will drop to the birth position- usually head-down in the lower part of the abdomen- this is called lightening. • Mother may have the urge to “nest” and want to clean and organize everything.

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