Human Fetal Human Fetal DevelopmentDevelopment

Edna Shasha Saimphar

11stst Trimester (1 – 3 Months) Trimester (1 – 3 Months)

Month 1Month 1:•During the first month of pregnancy the

egg is normally fertilized within 24-48 hours. The single fertilized cell begins to rapidly divide and at this point in time is called a zygote. Between days 7-10 from fertilization implantation usually occurs.

•The Umbilical cord, amniotic sac, and yolk are beginning to form. At the end of the month your baby is 2mm long. Size of a rice for the early stages of development.

11stst Trimester (Continued) Trimester (Continued)

Month 2Month 2:• The embryo is officially a fetus• All of the fetus organs are forming, including

external structures• Fingers and toes begin to form, while the leg

grows longer• Sex organs are forming, but not enough to

identify the gender• Eyes move forward while eyelids begin to

form• Fetus is 1 inch long and weighs less than 1/8

of an ounce

11stst Trimester Cont… Trimester Cont…

Month 3:Month 3:•By the end of this month the fetus

is fully formed.•Other features start to grow, like

the nails of the fingers, and toes•The beginning of the teeth,

circulatory system, the liver, and the reproductive organs

11stst Trimester Pictures Trimester Pictures

This is baby during the first three months 1st Month

2nd Month

3rd Month

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22ndnd Trimester (4 – 6 Months) Trimester (4 – 6 Months)

Month 4:Month 4:• Teeth and bones become denser• Baby can suck his/her thumb, yawn,

stretch, and make faces• The reproductive organs and genitalia are

fully developed• Now you can determine if you are having

a boy or girl• Heartbeats are audible through Doppler• Baby is now 6 inches and 4 ounces

22ndnd Trimester (Continued) Trimester (Continued)

Month 5:Month 5:•The baby is more active•Eyebrows, eyelashes, finger nails,

and toenails have formed•The baby can hear and swallow•The baby is about 6 inches and

weighs 9 ounces

22ndnd Trimester Cont… Trimester Cont…

Month 6:Month 6:•The baby has reddish and wrinkled

skin•Veins, finger, and toe prints are

visible•The baby can open it’s eyes •It weighs 2 pounds and is 12 inches

long

22ndnd Trimester Pictures Trimester Pictures

This is how the baby looks during months 4 through 6 4th Month

5th Month

6th Month

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33rdrd Trimester (7 – 9 Months) Trimester (7 – 9 Months)

Month 7:Month 7:• At the end of the month, fat begin to be

deposited onto your baby• Baby is 14 inches and weighs 2 – 4

pounds • Hearing is fully developed • Baby is constantly changing positions• Responds to stimuli, including sound,

pain, and light

33rdrd Trimester Cont… Trimester Cont…

Month 8:Month 8:

•The baby’s fat begins to increase•The baby’s weight is about 6 to 6 ½

pounds, and is 16 to 19 inches long

33rdrd Trimester Cont… Trimester Cont…

Month 9:Month 9:

•The baby reflects are so good that they can respond to light, sound, and touch

•The baby is changing positions to prepare for birth

•Baby can blink, close eyes, and turn it’s head

•Baby is now 18 inches long, and 7 pounds

33rdrd Trimester Pictures Trimester Pictures

This is your baby’s finally months of development, before you can see him or her 7th Month

8th Month

9th Month

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Congratulations!!!!!Congratulations!!!!!

Labor Time!!Labor Time!!• During this time

you could be in labor any where from 10 to a good 23 hours of labor

• This step is difficult for most women, but is all worth it when you have your newborn in your hands (:

• Congrats on you baby boy or girl

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