The document discusses the three trimesters of pregnancy. It notes that fertilization occurs when the egg and sperm meet in the fallopian tubes, and it takes about two weeks to know if the egg is fertilized. The first trimester involves development of the placenta and basic body structures. The second trimester sees the fetus grow to about 25 cm and develop features like eyebrows. The third trimester involves rapid growth and strengthening of bones and muscles until birth.

1. Rabecca Rein
Ashley Gibson
Period 5

2. FERTILIZATION
 Fertilization occurs when the egg and sperm met.
 It occurs in the oviduct (fallopian tubes)
 Takes about two weeks to know if the egg is fertilized.
FUN FACT: SPERM CAN
ONLY SURVIVE 48 HOURS
WITHIN THE FEMALE
GENITAL TRACT.

3. THE FIRST TRIMESTER
 The first 3 months of pregnancy.
 The placenta develops and surrounds the embryo.
 Gastrulation occurs when the ectoderm, endoderm, and
mesoderm form.
 In the first few minutes a membrane is forms to protect and
nourish the embryo.
 A placenta develops inside the uterus and surrounds the
embryo
 At the end of the first trimester the basic body structure is
develops
FUN FACT: AT WEEK 5 YOUR BABY IS NO
BIGGER TEHEN A APPLE SEED.

6. THE SECOND TRIMESTER
 Weeks 12-23
 Its weight is about 25 cm.
 It will also develop eyebrows and eye lashes
 The heart beat is detachable
 The mom can start to feel kicks, pokes, and flutters.
 The corpus luteum disintegrates
FUN FACT: DURING
ULTRASOUNDS YOU MAY
NOW BE ABLE TO SEE YOUR
BABY SUCKING THEIR THUMB.

10. THE THIRD TRIMESTER
 Week 24 until birth
 Rapid growth, growing larger and gaining stronger bones and
muscles each day.
 Respiratory and circulatory system undergo major changes.
FUN FACT: YOUR BODY START TO
PRODUCE BREAST MILK.

13. NEW BORN BABY IS BORN