1. Pregnancy http://www.babycenter.com/ http://www.healthguru.com/

2. From conception to birth….
Prenatal Development
From conception to birth….
the 40 week miracle!!

3. Review
Look Who’s talking
vary
1. An O_____ releases an O ___ (egg) during O________(menstrual cycle). The fimbrae bring the egg into the F_______ T_____. If a S_____ is present in the fallopian tube, then F_________ can take place.
Fertilization must take place in the F_______ T____. Only one S ____ may penetrate the O____. Conception has occurred!
If more than one ovum is present, they may both be Fer_____ and this will cause multiple births.
A fertilized ovum will implant itself in the U_____ and endometrium L_____ and begin to develop.
vum
vulation
allopian
ube
perm
ertilization
allopian
ube
perm
vum
tilized
terus
ining

4. 2. Congratulations! Your Pregnant
Online Pregnancy Test Link
Signs and Symptoms of Pregnancy
Headaches
Sensitive to smells
Frequent urination
Tender, tingling, swollen breast
Spotting
Fatigue
Enlarging uterus and abdomen
Food cravings
Period stops
Morning sickness
Glowing
Irritability
Putting on weight
Mood swings
Acne
Dizzy

6. Figuring your due date Take the first day of your last period
February 7th
Go back 3 months
November 7th
Add 7 days
November 14th
Give or take 2 weeks

7. Pre-Natal Development
3. Growth of the baby from conception to birth
40 weeks, 10 months, 280 days, 3 trimesters.
Very rapid: goes from the size of a pencil dot (one cell) to a 7 ½ pound (200 billion cells) in 9 months.
4 weeks = poppy seed, 5 weeks = grain of rice, weeks = blueberry, 14 weeks = apple, weeks = orange, 39 weeks = watermelon
If this rate of growth continued past birth, the baby would weigh 160 lbs by its first birthday.
Paper people winners

8. 4. 3 Trimesters (about 13 weeks each)
1st Trimester
focus is on physical development
The greatest time of risk and vulnerability for birth defects to the developing fetus.
2nd Trimester
Increased organ development
Define Quickening and Lanugo
Physically the easiest on the Mom
3rd Trimester
Continues to grow and practice using body and bodily functions
Define Vernix and Lightening
Physically the most demanding on Mom

9. 5. Prenatal Terms Embryo (weeks 3-8) Zygote (week 0-2)
Fetus (weeks 9-40)
Belly People

10. 6. Pregnancy House

11. Pre-natal Development “House”
Uterus / Womb
The fetus grows inside this.

12. Amniotic Sac and Amniotic Fluid
Sac contains embryo and amniotic fluid
A clear and transparent membrane that is very strong until broken
4 cups of amniotic fluid at birth that is replenished 9 times a day.
The fluid protects baby from bumps, bruises, and jolts
Prevents shock to the fetus, keeps a constant temperature, and keeps the fetus from adhering to the uterine wall.

13. Placenta (Latin for Cake)
Flat pancake shaped organ with amniotic sac attached to one side and the umbilical cord attached to the other.
filters nutrients and oxygen to the fetus.
At 4 months completely developed
By birth it is 1” thick, 8” diameter, 1lb
If the woman is undernourished during her pregnancy, the placenta does not transfer essential nutrients to the fetus.

14. Umbilical Cord
20” long and reaches from fetus’ stomach to the placenta.
Carries away waste from the baby and returns the waste products back to the mother.
Brings oxygen, food, and nutrient rich blood to the embryo to keep it alive.
▪ Thick garden-like hose that will not knot due to Whartons’ Jelly substance.

15. 7. A pregnant mom should gain 20-30 pounds over the course of the tnetire pregnancy.

16. Use this link to help you fill in this portion of your study guide
Page 9-- Month at a Time

17. Month 0 Begins 3 weeks after 1st day of last period
Ovulation occurred and the egg/ovum was released
Sperm (several hundred million) deposited into female’s body and begins travel to find the egg in the fallopian tube.
The sperm beats against the ovum membrane
Sperm sheds its tail and burrows inside.
2 cells now become one and begin to quickly divide to form a human being.
Begins to travel down the fallopian tube and 5-7 days after conception, the zygote implants itself into the endometrial lining

18. Human Egg with Coronal Cells
This image is of a purple human egg
sitting on a pin. The egg is coated with
the zona pellicuda, a glycoprotein that
protects the egg but also helps to trap
and bind sperm. Two coronal cells are
attached to the zona pellicuda.
Sperm on the Surface of a Human
Egg trying to fertilize an egg.

19. Colored Image of a 6 day old Human Zygote Implanting
Human Zygote and Sperm
It looks like the world at war, but it is actually
five days after the fertilization of an egg,
with some remaining sperm cells still sticking
around. The embryo and sperm cell nuclei are
stained purple while sperm tails are green.
The blue areas are gap junctions,
which form connections between the cells.
Colored Image of a 6
day old Human Zygote
Implanting

20. First Month for Baby Zygote travels into the uterus.
Rapid cell division.
Embryo implants into uterus.
Heart begins to beat.
Nervous system.

21. Month 1 Events for Baby Embryo phase begins 25 – heart beats regularly
Days after conception:
9 – begins to take shape
17 – has blood cells
18 – occasional heart pulsation
19 – eyes start to develop
20 – nervous system foundation set
24 – vital organs begin
25 – heart beats regularly
28 – 40 pairs of muscles, limb buds, trunk of body is formed
30 – develops ears and nose
31 – hand, arm, shoulder region formed
33 – hand section formed
Baby ¼” long (length of rice)

22. 4 Weeks

23. By the end of the First Month for Mom
Misses her period.
Already 2 weeks pregnant when she skips a period.
Changes in estrogen & progesterone levels.

24. Month 2 Events ▪Internal organs and neural system still forming
▪Blood is circulating
▪Still days after conception
40 days – body movements visible by ultrasound
42 days – skeleton complete
43 days – brain puts off electrical brain waves
49 days – has a miniature doll appearance
56 days – moves, squints, swallows, yawns, and tongue moves
▪Baby is 1.5” long

25. Second Month for Mom Nausea/Vomitting (Morning Sickness)
Frequent urination
Mood swings

26. Second Month for Baby Head develops rapidly.
Face, eyes, and ears take shape.
Internal organs
Sex organs.
Arm & leg buds.
Nails are forming
1 inch 1/10 oz.

29. Nutrition for a Pregnant
Woman - Link

33. Third Month for Mom Continued nausea. Frequent urination. Cravings.
Increased appetite.

34. Third Month for Baby Head grows rapidly. Bone formation.
Digestive organs function.
Arms, legs and fingers move.
3 inches 1 oz.

36. End of the First Trimester
Time for mom to adjust to pregnancy.
Baby grows most rapidly.
All internal organs are complete.
Mom must be very careful with health.

37. Fourth Month for Mom Body is adjusted to pregnancy.
Increased appetite.
Gained 2-4 lbs.
Clothes fitting snug.

38. Fourth Month for Baby Bones harden. Actively moving.
Lower parts of body grow rapidly.
Sex organs fully formed.
Heartbeat detected.
7 inches 5 oz.

39. Fifth Month for Mom Mild back-aches. Size change is obvious to others.
Hears heart beat.
Ultrasound.
Feels movement.
Gains 5-8 lbs.

40. Fifth Month for Baby Lanugo hair. Vernix.
Ears and nose develop cartilage.
Finger and toe nails.
Can suck thumb, hiccup, and kick.
12 inches 14 oz.

41. Sixth Month for Mom
Increased need for sleep.
Gained lbs.

42. Sixth Month for Baby Eyes and eyelids fully formed.
Fat developing under skin.
Practices breathing movements.
14 inches 2 pounds

43. End of Second Trimester
Baby continues to develop and grow.
Mom feels good.
Easiest trimester for mom and baby.

44. Seventh Month for Mom Effects posture. Leg cramps. Back-aches.
Waddling.
Gains pounds.

45. Seventh Month for Baby Brain developing rapidly.
Inhales amniotic fluid to develop lungs.
Gaining lots of weight.
17 inches 3 pounds

46. Eighth Month for Mom Heartburn. Difficulty breathing.
Multiple small meals.
Increased urination.
Back, leg and muscle aches.
Gains pounds.

47. Eighth Month for Baby Fat is stored for later use.
Fingernails reach beyond fingertips.
Rapid growth.
Sheds vernix & lanugo.
17 inches 5 pounds

48. Ninth Month for Mom Baby drops into pelvis. Contractions.
Gains pounds.
Gives birth!!!!

50. Ninth Month for Baby Organ system fully functional.
Vernix covers entire body.
Settle into head-down position for birth.
21 inches 7 pounds

51. End of Third Trimester Most difficult for mom.
Baby gains weight rapidly.
Both are ready for birth!

52. Welcome to the World!

53. Child Activity Happy B-day Dr. Suess!!!!!! Cat in the Hat
party hat and tail!