1. Unit 2: Pregnancy & Birth
Chapter 3: Prenatal Development
Chapter 4: Preparing for Birth
Chapter 5: The Baby’s Arrival

2. Chapter 3: Prenatal Development
Objectives:
To help you:
Name the 3 stages of pregnancy and describe the prenatal development in each
Describe how personal characteristics are inherited
Explain how multiple births occur
Discuss possible solutions for infertility
Discuss the causes of birth defects and how they can be diagnosed and prevented
Explain why teen pregnancies are considered high risk

3. What does Prenatal mean??
Prenatal: refers to the period before ______
_____weeks
Single cell develops into a human being

4. The Forty-Week Miracle
Begins at _____________
Continues into 3 stages:
The ________
The __________

5. Conception Ovum: female cell or _______ Released one time each month
Released by the __________

6. Conception Ovum: female cell or egg Released one time each month
Released by the ovaries
Moves through the __________ ___________

7. Conception Ovum: female cell or egg Released one time each month
Released by the ovaries
Moves through the fallopian tubes
Enters the ________, or ________
Takes about 2-3 days
Where __________________ takes place

8. Conception
When the egg reaches the uterus, it usually disintegrates and is flushed away
______________________
If the egg meets a __________and is fertilized
Sperm: __________________
If this occurs- _______________ takes place
Beginning of ________________

9. Period of the Ovum Lasts about 2 weeks
The fertilized egg attaches itself to the ______ of the uterus & begins to grow
The lining thickens with _______________ blood
It cannot be shed therefore menstruation does not occur

10. The Ovum Ovum begins to grow through _____________
Single cell divides into 24so on
Each cell is _____________ to become a different type
Skin, bones, brain, blood cells, etc.
Remarkable growth during 2 weeks
Ovum is still only size of _______________

11. Period of the Embryo Increasing cluster of cells
Lasts about ______ weeks
Growing ___________
Firmly attached to the uterus

12. Embryo & Placenta
By the end of this stage, the connecting tissue between embryo and uterus develop into
____________ provides nourishment & oxygen for the baby
Carried by the _____________________
Filled with blood & rigid… not likely to tangle until birth

13. Amniotic Fluid Embryo is surrounded by a bag of ______ called
Acts as a ___________ to protect the baby

14. Period of the Fetus
Begins around ___________of pregnancy and lasts until birth
Beginning to be more recognizable
Arms, legs, fingers, and toes are developing
_________ features and internal organs are present
Not are all ______________

15. First movements 4th-5th month
Fetus’ movements and kicks begin to touch the ______ of the uterus
_____________
Gradually become stronger and more frequent
“__________________”
Helps Dr. estimate the fetal age/ birth date
________________ is now audible

16. Continued Growth Surrounding fluid is _____ as fetus _______
Amniotic fluid fills only the _____________
Less space for baby to move– _____________

17. Getting Ready for Birth
7 months and on..
________________ are ready to sustain life
Gains weight
______ deposits are added under the skin
Storing nutrients, building ________________

18. Abilities The unborn baby can: Suck it’s thumb Cough Sneeze Yawn
Hiccup
Cry

19. Weight Shift During the 9th month: baby’s weight shifts unexpectedly
“_______________” occurs
Baby has dropped into the _________________
Birth is not far off
Sometimes occurs just before _____________
Could be mistaken for cramping from ______________

20. Positioning Baby is most likely ____________________
Head nestled in __________
Easiest & ________ for birth
Baby is less active– fills most of the space

21. The Mother Skin & _________muscles stretch to capacity
Muscles of the uterus and abdomen are capable of being increased up to ____ times their original size
Return close to normal within a _______ after birth