3.02 Fetal Development Month by Month

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Transcript 3.02 Fetal Development Month by Month

Fetal Development
Month by Month
3.02-Fetal Development
First Month
• By the end of the
two weeks, the
zygote is about the
size of a pin head.
The heart, which is
no larger than a
poppy seed, has
begun beating. The
egg has attached
itself to the lining of
the uterus.
3.02-Fetal Development
First Month
3.02-Fetal Development
Two Months
• The zygote is about 1/4
inch long and has
distinct, slightly webbed
fingers. Face, eyes,
ears, and limbs have
developed. Veins are
clearly visible. The
heart has divided into
right and left chambers.
Zygote changes into an
embryo at the end of eight
3.02-Fetal Development
Two Months
3.02-Fetal Development
Three Months
• By now the fetus is 1
inch long and is
fully formed. He/she
has begun
swallowing and
kicking. All organs
and muscles have
formed and are
beginning to
3.02-Fetal Development
Four Months
• Baby is covered with
a layer of thick,
downy hair called
lanugo. His/her
heartbeat can be
heard clearly. This is
when the mother
may feel baby's first
kick. Size: about 3
inches long.
3.02-Fetal Development
3.02-Fetal Development
4 months
Five Months
• A protective coating
called vernix
caseosa begins to
form on baby's skin.
At this time the baby
is about 6 ½-7
inches long and
weighs almost 4-5
3.02-Fetal Development
Six Months
• Eyebrows and eyelids
are visible. The baby's
lungs are filled with
amniotic fluid, and
he/she has started
breathing motions. If the
mother talks or sings,
the baby can hear. 8-10
inches, about 8-12
3.02-Fetal Development
6 Months
3.02-Fetal Development
Seven Months
• At the beginning of
the seventh month,
the baby weighs
about 1 ½ pounds
and is about 14-16
inches long.
His/her body is wellformed. Fingernails
cover the fingertips.
3.02-Fetal Development
Eight Months
• Baby is gaining about
half a pound per week,
and layers of fat are
piling on. He/she has
probably turned headdown in preparation for
birth. He/she weighs
between 2 1/2 and 3
3.02-Fetal Development
3.02-Fetal Development
Nine Months
• Baby is a hefty 5 to
6 pounds and
measures between
17 and 18 inches.
As he/she becomes
more crowded, the
mother may feel
baby move around
3.02-Fetal Development
List one important fact from each month.
Share and discuss.
3.02-Fetal Development