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Pregnancy. The Beginning of the Life Cycle Fertilization/Conception  The process of sperm meeting with an egg in the Fallopian tube  Once an egg is.

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Presentation on theme: "Pregnancy. The Beginning of the Life Cycle Fertilization/Conception  The process of sperm meeting with an egg in the Fallopian tube  Once an egg is."— Presentation transcript:

1 Pregnancy

2 The Beginning of the Life Cycle Fertilization/Conception  The process of sperm meeting with an egg in the Fallopian tube  Once an egg is fertilized it becomes a zygote Zygote = fertilized egg (sperm meeting the egg)  The zygote travels through the fallopian tube and begins to divide

3 The Beginning of the Life Cycle  The zygote divides many times and becomes a blastocyst (hollow cluster of cells) by the time it gets to the uterus  Implantation occurs. Implantation is the process in which the blastocyst attaches itself to the wall of the uterus  Zygote is now called an embryo (occurs 7-10 days after fertilization)

4 Development of the Uterus  After implantation, development continues in the uterus  Three structures form from the dividing cells: the amniotic sac, placenta, and umbilical cord (All three serve to protect and nourish the developing embryo, and later the fetus)

5 Development in the Uterus Amniotic Sac  Fluid filled bag of thin tissue. The sac continues to grow in size as the embryo grows.  Inside the sac, the embryo floats in amniotic fluid Placenta  The structure that holds the embryo to the wall of the uterus  Within the placenta, oxygen and nutrients move from the mother’s blood into tiny blood vessels that lead to the embryo

6 Development of the Uterus  Umbilical Cord  A ropelike structure that connects the embryo to the placenta  This cord is the embryo’s lifeline  It carries nutrients and oxygen from the placenta to the embryo and wastes from the embryo to the placenta

7 Development of a Uterus  WEEK 1-8 = Embryo  Week 9-Birth = Fetus  Pregnancy term= lasts between weeks  Pregnancy Calendar (kids health) Pregnancy Calendar (kids health)

8 Conception

9 Developing Embryo (4 weeks)

10 Developing Embryo (7 weeks)

11 Developing Fetus (14 weeks)

12 Developing Fetus (24 weeks)

13 Developing Fetus (30 weeks)

14 Birth (3 stages)  Stage One (Labor)  Dilation- stretching of the cervix (10cm)  May last for a few hours  Contractions to shorten the uterus  Longest most difficult part of labor  Near the end of this stage, the amniotic sac breaks and the cervix becomes softer and wide enough (10 cm) for the fetus to pass through

15 Birth (3 Stages)  Stage Two (Delivery of the Baby)  Birth: muscles of the uterus contract and push baby out of the body  Umbilical cord is clamped and cut  Appearance of the head first, known as crowning  Stage Three (After Birth)  Afterbirth: contractions continue and push placenta and umbilical cord out of the mother

16 Complications during Birth Premature birth  Delivery of a live baby before the 37 th week of pregnancy Low birth weight  A newborn that weighs less than 5.5 pounds at birth. *Premature and low birth weight babies face an increased risk of health problems

17 Complications during Birth  Cesarean Section  This method can be the family’s choice of delivery or what is called an emergency “cesarean section” or “C-Section ”.  The doctor makes an incision in the lower abdomen into the uterus. The baby and placenta are then removed.

18 Having a Healthy Pregnancy  Avoid alcohol (Fetal Alcohol Syndrome)  Causes physical, mental and behavior problems  FAS babies are: -Shorter & lighter- Poor coordination -Speech problems- Heart defects -Slow growth- Mental retardation -Facial abnormalities

19 Having a Healthy Pregnancy  Avoid drugs (tobacco, OTC, prescription, and illegal drugs) = Low birth weight/possible premature birth  Exercise  Eat a variety of healthy foods (avoid uncooked meats, deli meats, fish, seafood, caffeine)

20 Signs of Pregnancy Appear a few weeks or 1-2 months after conception/fertilization  “Morning Sickness”  Nipples darken  Increased fatigue  Menstruation usually stops  PMS - type symptoms  Increased urination

21 Pregnancy Test  Reveals hormone HCG in urine about 2 weeks after missed period - about 95% accurate  A blood test also detects HCG  Home tests give false negatives and positives. Should be followed up by a doctor visit


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