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Pregnancy Weeks 1-6

Pregnancy Weeks 1-6. Pregnancy test. Home pregnancy test Schedule a appointment for a blood test with your doctor to confirm 100%. Symptoms. Missed period Morning sickness or all day nausea Frequent urination Tiredness Tender breasts Bloating Irritability and mood swings. Fertilization.

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Pregnancy Weeks 1-6

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  1. PregnancyWeeks 1-6

  2. Pregnancy test • Home pregnancy test • Schedule a appointment for a blood test with your doctor to confirm 100%

  3. Symptoms • Missed period • Morning sickness or all day nausea • Frequent urination • Tiredness • Tender breasts • Bloating • Irritability and mood swings

  4. Fertilization • Several million sperm released • Less than 10% make it to cervix • 1-2000 enter fallopian tube • 1-200 find egg

  5. 1 fertilizes the egg – happens in fallopian tube • Sperm releases an enzyme(acrosome) to penetrate egg covering. Inside, it loses tail and the 2 nuclei combine to form the zygote(fertilized egg with 46 chromosomes • Once a sperm enters, the egg hardens and does not allow another sperm to enter

  6. Twins • Identical – zygote divides within 2 days • Fraternal – 2 eggs are fertilized

  7. Zygote vs. embryo Zygote when sperm meets egg -1 cell Embryo – after week 1

  8. Development • Implantation to uterus • 1 week after fertilization – baby is size of the head of a pin • Umbilical cord and placenta develop • Placenta – organ that connects fetus to womb for nutrient uptake, waste removal and gas exchange • Umbilical cord – connects fetus to placenta • Amniotic sac begins to form • fluid filled sac for protection of developing baby

  9. 4 weeks - Baby • Spinal cord is developing • 200 cells in 3 layers • Endoderm– internal organs • Mesoderm – bones, circulatory, kidney, muscles, reproductive • Ectoderm– skin, brain, nerves and hair • About the size of a dime

  10. 5 weeks - Baby • Eyes beginning to develop • Hand and foot plates forming • Head much larger than trunk • Heart begins to beat

  11. 6 weeks - Mom • May have increased sensitivity to smell • More serious morning sickness • Get lots of rest • Eat regularly • Grapes • Keep food by bed for am • Weight gain • Headaches

  12. 6 weeks - Baby • Arm and leg buds forming • Heart and liver developing • Brain activity can be monitored • Oral and nasal cavities beginning to develop

  13. Health and nutrition • Begin taking prenatal vitamins • Drink lots of water • Keep a healthy diet • Avoid alcohol, tobacco and caffeine • Medication – pain relievers and cough medicine • Painting • Cat litter

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