Reflection #1 (Term 2) Book: The Little Mouse, The Red Ripe Strawberry, and THE BIG HUNGRY BEAR By Don and Audrey Wood Illustrated by Don Wood
Reflection #1 (Term 2) Book:
The Little Mouse, The Red Ripe Strawberry, and THE BIG HUNGRY BEAR
By Don and Audrey Wood Illustrated by Don Wood
Pre-Natal Development
BABY
Zygote EmbryoFetus
Prenatal Baby Development Development of the baby during the
period before birth.
Development in three stages Zygote—first 2 weeks of pregnancy Embryo—3rd-8th week of development Fetus—8th week till delivery
How is Prenatal Development Measured? Prenatal Period lasts 40 weeks
Is measured from the last menstrual period
Broken up into 3 trimesters Each trimester is about 13 weeks, or 3 months
First Trimester
Weeks 1-13, Months 1-3
Month 1—The Zygote Weeks 1-2
Finishing menstrual cycle
Weeks 3-4
Fertilization/conception Egg travels to uterus (womb) Implantation—this is when pregnancy
technically begins
The Zygote—Month 1 Cell multiplication begins Internal organs and circulatory system
begins to form. At the end of two weeks the zygote is the
size of a pin-head Heart begins to beat
3 weeks & 1 day after fertilization Small bumps show the beginnings of arms
and legs
Parts of the Zygote
4 Weeks
The Embryo—Month 2
At 5 weeks the embryo is ¼ inch long All major organ systems develop Face and limbs take shape
Month 2 Webbed fingers and toes develop
7 weeks 8 weeks
The Embryo—Month 2
The placenta and Umbilical Cord develop Placenta- The tissue that connects the sac
around the unborn baby to the mother’s uterus Umbilical Cord- Tube that connects the baby
to the placenta Brings the baby nourishment and oxygen from the
mother’s blood Takes away waster products
Amniotic Sac Holds the amniotic fluid and surrounds the baby
Amniotic fluid Gaurds against jolts and keeps constant temperature
Two Months
Month 2 This is when signs and symptoms of
pregnancy usually become apparent
First trimester has the worst symptoms
Look Up Early Symptoms of Pregnancy
Web MD Pregnancy App
Signs & Symptoms of Pregnancy 1. Missed menstrual period 2. Fuller and more tender breasts 3. Nausea or morning sickness 4. Fatigue 5. Sensitivity to particular odors 6.Increased urination 7. Moodiness
The Fetus—Month 3 The fetus is about 1 inch long Nostrils, mouth, lips, teeth buds, and eyelids
form Eyelids are fused shut Arms, legs, fingers, and toes have developed All internal organs are present—but aren’t
ready to function
3 Months
Fingers & toes no longer webbed
11 Weeks
12 Weeks
The Fetus—Month 3 The genital organs can be recognized as male
or female Can tell as early as 12 weeks Most doctors give the ultrasound at 18-20 weeks
Summary of First Trimester The most critical and greatest time of risk and
vulnerability for birth defects depending on what the mother does or does not do during the pregnancy i.e.: taking drugs/medication.
Signs and symptoms of pregnancy are more likely to occur.
The majority of the physical development occurs (every physical feature and vital organs form, heart beats and brain waves begin etc.)
There is small maternal weight gain.
STOP HERE FOR DAY 1
The Fetus—Month 4 Fetus is 3 inches long and weights 5 oz. Your baby is covered with a layer of thick,
downy hair called lanugo. His heartbeat can be heard clearly. This may be when you feel your baby's first
kick. The baby can such thumb, swallow and hiccup.
4 months
15 Weeks
16 Weeks
18 Weeks
The Fetus—Month 5 The Fetus is about 6 inches long and
weighs 4-5 oz. A protective coating called vernix begins
to form on baby's skin. Hair eyelashes and eyebrows appear Organs keep maturing Fetus is very active The eyes can open and blink
Smallest baby in the world born At just 22 weeks
She was 10 OUNCES when born and 9.5 inches. That's just longer than the length of your hand. She weighed less than a can of soda!
Her little feet
The Fetus—Month 6 The fetus is 8-10 inches long and weighs
4-5 oz. Your baby's lungs are filled with amniotic
fluid, and he has started breathing motions.
If you talk or sing, he can hear you. Fat is starting to deposit under the skin
6 Months
The Fetus—Month 7 Fetus is 10-12 inches long and weighs
about 1-2 pounds. Fetus is active and then rests. The baby now uses the four senses of
vision, hearing, taste and touch
Seven Months
The Fetus—Month 8 The fetus is 14-16 inches long and weighs
2-3 pounds Layers of fat are piling on. Fetus has probably turned head-down in
preparation for birth. Fetus may react to noises with a jerking
action
Eight Month
The Fetus—Month 9 Fetus is about 17-18 inches long and
weighs 5-6 pounds Skin is smooth because of the fat Baby’s movement slows down due to lack
of room “Lightening” occurs when the baby drops
in the pelvis Disease fighting antibodies are taken from
the mother’s blood