1. The house, terms, and month by month information
Prenatal Development
The house, terms, and month by month information

2. Review of Fertilization
A sperm travels up the v________ where it must go through the C______ to enter into the u_____. At the top of the uterus, the sperm will decide whether to take the right or left F_______ T_____ to find the O_____
An O_____ releases an O ___ (egg) during O________(menstruation). The fimbrae brings 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 /z________ will travel down the fallopian tubes to the U_____ and implant itself in endometrium L_____ where it will begin to develop.
agina
ervix
terus
allopian
ube
vum
vum
vulation
vary
allopian
ube
perm
ertilization
allopian
ube
perm
vum
tilized
ygote
terus
ining

3. Congratulations! Your Pregnant
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

4. Pre-Natal Development
Growth of the baby from
conception to birth.
40 weeks, 10 months,
280 days, 3 trimesters
In this time, it will go from one cell the
size of a pencil dot to a 7 ½ pound
200 billion cell baby.
4 weeks = poppy seed, 5 weeks = grain of rice, 7 weeks = blueberry, 14 weeks = apple, 15 weeks = orange, 39 weeks = watermelon
If this rapid rate of growth continued past birth, the baby would weigh 160 lbs by its first birthday.

5. Section B #2 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

6. Prenatal Development Definitions
Lanugo Fine white hair that covers the fetus’ body to keep it
warm and to help the vernix stick to the body.
Vernix A white, waxy coating covering the fetus’ body to protect
it from the elements of the womb.
Quickening Feeling the baby move for the first time. This usually
occurs around the 5th month.
Lightening When the baby drops down into the pelvis region in
preparation for delivery.

7. Prenatal Terms Embryo weeks 3-8 of pregnancy Zygote weeks 0-2
*Fertilized ovum
Fetus
weeks 9-40
of pregnancy

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

9. 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.

10. 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.

11. 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.

12. Uterus / womb
Amniotic fluid
placenta
Amniotic sac
cervix
Amniotic cord
vagina