PCD
Fetal Development
Trimester by Trimester
Month by Month
Development of Baby
&
Changes in the Mother
“Trimester
Graphic
Organizer”
• Use the organizer to complete notes
First Trimester
First Month
• Baby
•Mother
– Size of a pin head at two
•Missed period
weeks
•Enlarged breasts
– Egg has attached itself to the
•Frequent urination
lining of the uterus.
– Called Zygote until it
attaches to the lining of the
uterus
• Then becomes an
embryo
– The heart, which is no larger
than a poppy seed, has
begun beating.
First Month
First Trimester
Two Months
• Baby
– Zygote 1/4 inch long
and has distinct, slightly
webbed fingers.
– Face, eyes, ears, and
limb develop.
– Bones begin to form
– 8 weeks, changes from
embryo to a fetus
• Will remain fetus
until birth
– Veins are clearly visible.
– The heart has divided
into right and left
chambers.
•
Mother
• Swelling of breasts
• Increased urination due to
pressure on bladder
• Nausea
• “Morning sickness”
Two Months
First Trimester
Three Months
• Baby
– 1 in. long as mth.
Begins
– Nostrils, mouth, lips,
teeth buds, eyelids
form
– Fingers and toes
almost developed
– All organs present,
although immature
– Begun swallowing and
kicking
•Mother
•Breasts firmer/fuller,
may ache
•Nausea
•Fatique
•Frequent urination
may continue
•Abdomen slightly
larger
•Wt. gain may total 2-4
lbs.
Second Trimester
Four Months
• Baby
– 3 in long
– Weighs 1 oz. as mth.
Begins
– Can suck thumb, swallow,
hiccup, and move around
– Facial features become
clearer
– Covered with a layer of
thick, downy hair called
lanugo.
– Heartbeat can be heard
clearly
– This is when you may feel
your baby's first kick.
•Mother
•Appetite increases
•Most unpleasantness of
early pregnancy, such as
morning sickness,
usually gone
•Abdomen cont. to grow
slowly
4 months
Second Trimester
Five Months
• Baby
– 6 ½-7 inches long
– weighs almost 4-5 oz.
– Hair, eyelashes, and
eyebrows appear
– Teeth cont. to develop
– Organs are maturing
– Becomes more active
– Protective coating called
vernix caseosa begins
to form on baby's skin.
• ver·nix ca·se·o·sa
•Mother
•Enlarged abdomen
becomes apparent
•Slight fetal movements
•increased size of
abdominal area may
begin to affect posture
Second Trimester
Six Months
• Baby
– 8-10 in.
– 8-12 oz.
– Eyebrows and eyelids
are visible.
– The baby's lungs are filled
with amniotic fluid.
• started breathing motions.
– If the mother talks or
sings, the baby can hear.
•Mother
•Fetal movements
sensed as strong
kicks, thumps, and
bumps
•Some may be
visible
•Wt. gain by the
beginning of this
mth. may total 1012 lbs.
6 Months
Third Trimester
Seven Months
• Baby
– 14-16 in. long
– 1 ½ pounds
– Periods of activity
followed by periods of
rest and quiet
– Body is well-formed
– Fingernails cover his
fingertips
•Mother
•Increased size may
affect posture
Third Trimester
Eight Months
• Baby
–
–
–
–
–
•Mother
14-16 in. long
•Discomfort may result from
Weighs 2 1/2 and 3 pounds
increased size of abdominal
• Gaining about half a pound per
area
week
•backache=fatique
Layers of fat are piling on
•Leg cramps=shortness of
Moves into head-down
position in preparation for
breath
birth
•Fetal kicks may disturb the
May react to loud noises with
mother’s rest
reflex jerking action
•At beginning of mth., wt. gain
totals 18-20 lbs
Third Trimester
Nine Months
• Baby
– 17-18 in. long
– Wt. 5-6 lbs
– Skin becomes smooth as
fat deposits cont.
– Movements decrease as
the fetus has less room to
move around
– Acquires antibodies to
fight disease from the
mother’s blood
– Moves into pelvis, ready
for birth
•Mother
•“Lightening” felt as the
fetus drops into the pelvis
and decreases pressure
on mother’s organs;
breathing becomes easier
•Other discomforts may
cont.
•Total wt. gain 25-35 lbs. is
typical
•False labor pains may be
experienced
Two
Sample
Test
Questions
1. Which illustrates the development
of a fetus during the third trimester?
A. Arms and legs develop
B. Fingers and toes begin to develop
C. Lightening occurs
D. Nostrils, mouth, and eyelids form
Answer=C
2. A pregnant woman is very restless and
tired. She suffers from backache, shortness
of breath, and leg cramps.
Which stage of pregnancy is this?
A. Conception
B. First trimester
C. Second trimester
D. Third trimester
Answer=D
Partner up!
• You will be put into groups to complete the
next assignments.
What Is Wrong With Me?
• Directions:
– Work with a partner.
– Read the scenario.
– Each partner should have a paper labeled with the
above heading, name, date, block
– Work together to list the symptoms
• decide what is wrong with the person in the scenario.
– Use may use The Developing Child textbook to
back up your diagnosis.
• Hi, My name is Mary. When I got up this morning to go
to work, I did not feel well. I had a mild ache in my
lower abdomen and a very full feeling. I feel very tired
and a little faint. I told my husband that I think my
period is late. I hope I am not diabetic because I have to
urinate frequently. I have noticed for the last few days
that my breasts are swollen and tender and are causing
me discomfort. I also have been feeling nauseous and I
had to throw up right before I left for work. What could
be wrong with me? I need your help to diagnose my
problem.
“Name That Month”
• Directions:
– Class will be arranged into nine groups.
– Each group will receive one case study strip.
– Each group will read the case study (table tent)
together to decide which month of the
pregnancy is described.
– Be ready to share your response.
Case Study #1
• The zygote is the size of a pin head. The
egg is attached to the lining of the uterus.
The zygote is attached to the lining of the
uterus and becomes an embryo. The mother
has missed her menstrual cycle, her breasts
have enlarged, and she has to urinate
frequently.
• What month is this?
• Month 1
Case Study #2
• The fetus is 17-18 inches long and weighs 5-6 pounds. The
fetus continues gaining weight until the week before birth.
The skin becomes smooth as fat deposits continue to develop.
Movement decreases as the fetus has less room to move
around. The fetus acquires antibodies to fight disease from
the mother’s blood and moves into the pelvis, ready for birth.
The mother feels lightening as the fetus drops into the pelvis;
breathing becomes easier. Other discomforts continue, and a
total weight gain of 25-35 pounds is typical. False labor
pains called Braxton Hicks contractions may be experienced.
• What month is this?
• Month 9
Case Study #3
• The embryo is ¼ inch long and has
developed face, eyes, ears, and limbs. The
bones have begun to form. The embryo
changes to a fetus and remains a fetus until
birth. The mother has swelling of breasts
and increased urination due to pressure on
the bladder. She is not having nausea or
morning sickness.
• What month is this?
• Month 2
Case Study #4
• The fetus is 3 inches long and weighs one ounce.
The fetus can suck its thumb, swallow, hiccup,
and move around. The facial features become
clearer. The mother’s abdomen continues to
grow slowly. Most discomforts of early
pregnancy, such as morning sickness, usually are
gone. Appetite increases.
• What month is it?
• Month 4
Case Study #5
• The fetus is about 8-10 inches long and
weighs about 8-12 ounces. The mother
senses fetal movement as strong kicks,
thumps, and bumps---some may be visible.
The mother gains as much as 10-12 pounds
during this month.
• What month is it?
• Month 6
Case Study #6
• The fetus is about 14-16 inches long, weighs about 2 ½3 pounds as the month begins. The weight gain
continues rapidly. The fetus may react to loud noises
with a reflex jerking action. The fetus moves into a
head-down position. The mother may show signs of
discomfort from increased size. She might show signs
of backache and fatigue along with leg cramps and
shortness of breath. The fetal kicks may disturb the
mother’s rest. At the beginning of the month, weight
gain totals about 18-20 pounds.
• What month is this?
• Month 8
Case Study #7
• The fetus is about one inch long. Nostrils, mouth,
lips, teeth buds and eyelids form. Fingers and toes
also develop. All the organs are present, although
they are immature. The mother’s breasts become
firm and full, and they may ache. Nausea, fatigue
and frequent urination are still present. The
abdomen becomes slightly larger. The uterus is
about the size of an orange. The mother has gained
2-4 pounds.
• What month is this?
• Month 3
Case Study #8
• The size of the fetus is 14-16 inches long
and weighs about 1½ -2 pounds as the
month begins. The fetus experiences
periods of rest and quiet. The mother’s
increased size may affect her posture.
• What month is this?
• Month 7
Case Study #9
• The fetus is about 6 ½-7 inches long and weighs
about 4-5 ounces. Hair, eyelashes, and eyebrows
appear and teeth continue to develop. The organs
are maturing and the fetus is becoming more
active. The mother’s abdomen has become large
enough to let others know she is pregnant. Slight
fetal movements are felt. Increased size has begun
to affect her posture.
• What month is this?
• Month 5
Fetal Development
Growth & Weight Chart
• Materials:
– Construction paper
– Ruler
– Scale
– Colored Pencils
– PowerPoint Notes
• Directions:
– Use materials to create a size chart of the growth of the fetus each month
– You should chart it on paper, month by month and beside each month measure
the size.
• Look for teachers example.
– You will also use scales and classroom materials to determine the weight of the
fetus each month.
• Record your findings on the fetal growth chart construction paper.
Fun Way to Remember
• Directions:
– Use teacher’s example to create a fun way to
remember the 9 months of pregnancy for Baby and
Mother.
• Materials:
– Index cards
– Colored pencils
– Teachers Mnemonic
• I will post on document camera
Brain Pop
•
Directions:
– Look on the board for Brain Pop username and password.
– Go to website www.brainpop.com
– Login
– Click:
• Health
• Genetics, Growth & Development
• Fetal Development
– Complete the following in this order:
1. Watch video
2. Quiz
3. Activities
4. Q&A
5. FYI
–
You will need to turn in evidence of Brain Pop use.
•
One paper per group
Let’s see what you know!
•
•
•
•
Directions:
Close eyes and put heads down on desks.
I will describe each month of pregnancy.
You will hold up the # of fingers corresponding to the
month of pregnancy that is described.
• Teacher will rotate around the room and touch student’s
hand if incorrect.
– If hand is touched you will know you need to try again!
– If hand is not touched, leaved your fingers up until the
next description is called out.
• Test may consists of 9-18 questions.
3.02 Fetal Development
Test Review
• Directions:
– Complete MiTiReLa 3.02 Learning Mode.
– Record score after clicking daily progress.
– Teacher will need to see and sign off on
your MiTiReLa paper.