Fetal Development Month By Month

Month by Month

Timeline of Prenatal Development Day 1- Conception takes place > Period of the Zygote 7-14 Days- fertilized egg implants in mother’s uterus

Timeline of Prenatal Development 18 Days- heart begins to beat 21 Days- pumps own blood through separate closed circulatory system with own blood type. 28 Days- eye, ear and respiratory system begins to form

Fertilized egg is implanted in mother’s uterus Period of the Zygote Zygote grows to be about the size of a pin head Conception Fertilized egg is implanted in mother’s uterus (10-14 Days)

Period of the Embryo 2 weeks after conception 2 months after conception *All Organs form *Attachment of Umbilical Cord to uterus *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.

First Month

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.

Two Months

From End of Two Months of Pregnancy Period of the Fetus From End of Two Months of Pregnancy Birth!

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.

4 months

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

6 Months

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.

7 Months

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.

8 months

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

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

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