pregnancy is broken up into trimesters first trimester (1-3 months) –ovum (a female egg)...
TRANSCRIPT
Pregnancy is broken up into Trimesters
• FIRST Trimester (1-3 Months)– Ovum (a female egg)– Zygotic & Embryonic period of Development– When all organs, nerve and brain cells Develop
• SECOND Trimester (4-6 Months)– “Golden Trimester” when Mother feels the best
• Third Trimester (7-9 Months)– Baby’s organs and body systems mature – Baby gains weight
Day 1-Day 1- Conception takes place> Period of the
Zygote
7-14 Days-7-14 Days- fertilized egg implants in mother’s uterus
18 Days-18 Days- heart begins to beat
21 Days-21 Days- pumps own blood through separate closed circulatory system with own blood type.
28 Days-28 Days- eye, ear and respiratory system begins to form
Period of the ZygotePeriod of the Zygote
Conception
Fertilized egg is implanted in mother’s uterus
(10-14 Days)
Zygote grows to be about the size of a pin head
Period of the Embryo
2 weeks after conception
2 months after conception
*Attachment of Umbilical Cord to uterus
*All Organs form
*Amniotic Sac
& Fluid formed
First Month
• Cell multiplication begins
• Egg attaches to uterus lining
• The heart, which is no larger than a poppy seed, has begun beating.
Two Months• The embryo is about ¼”
inch long and has distinct, slightly webbed fingers.
• Veins are clearly visible. • The heart has divided into
right and left chambers.• Bones begin to form• Development of internal
organs• The embryo is attached to
the mother by the umbilical cord.
Three Months
• By now the fetus is 1 inch long and is fully formed.
• All organs and muscles have formed but are immature.
• Eye lids fused. • Fingers and toes
almost complete
Four Months
• Fetus is 3 inches long
• Can suck thumb, swallow, hiccup and move.
• Facial features are clearer.
Five Months
• Fetus is 8-10” long
weighing almost a pound.
• Lanugo develops• Fetus is more active• Hair, eyelashes, and
eybrows appear
Six Months
• Baby's lungs are filled with amniotic fluid, and he has started breathing motions.
• If you talk or sing, he can hear you.
• Fat deposits under skin
• Vernix develops
Seven Months
• By the end of the seventh month, your baby weighs about 1 1/2 -2lbs and is about 10-12 inches long.
• Fetus is active, then rests.
Eight Months
• Your baby is gaining about half a pound per week, and layers of fat are piling on.
• He has probably turned head-down in preparation for birth.
• Fetus may react to noise with jerking actions.
Nine Months
• Your baby is a hefty 6 to 9 pounds and measures between 19 and 22 inches. As he becomes more crowded, you may feel him move around less.
• Disease-fighting antibodies are taken in from mother’s blood
• Fetus “drops” into pelvis and is ready for birth