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The Human Development In Three Trimesters

Trimester 3

Home
Trimester 1
Trimester 2
Trimester 3
Dangers in Each Trimester
Giving Birth
Medical Tools Used to Monitor the Fetus
Other Options of Getting Pregnant

A Fetus in the Uterus
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Here's How It works:

Month 7
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(the picture above shows a baby in the first month of the trimester three)

The last three and a half months of a pregnancy is known as the third trimester. During this last stage development is still occurring and the chances of survival is very high. By now, the fetus is very active. Weighing somewhere between 2 1/2 to 3 pounds and 14 to 17 inches in length. The brain is growng rapidly,the head is getting larger and rudimentary breathing is present.

Month 8
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(the picture above shows the fetus in the second month of trimester three)

During the middle of the process, growth is continuing. The fetus should be 16 1/2 to 18 inches long, weigh 4 to 5 pounds and look more like a newborn. The fetus sleeps 90-95% of the day and sometimes experiences wakefulness and REM sleeping, which indicates dreaming. The lung and digestive tract are almost fully developed, bones in the head are soft and flexible, and iron is being stored in the liver. But, the most interesting part is the fetus is now able to respond to sounds.  

Month 9
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(this picture shows the fetus in the third month of trimester three-- NOTICE BIRTH POSITION)

Lastly, from weeks 32 to 38, the fetus is less active. And is probably reaching the end of it's growing stage(19 inches in length and 6-9 pounds for weight.) Around the eigth month, the fetus is able to assume the birth position. This means no longer ithe fetus floating freely. They're in a certain position in the uterus which doesn't have much room and may be uncomfortable. After entering the vertical head down position it isn't long before we welcome them into the world.

-Jade Moseley