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At five weeks, your baby is about the size of a sesame seed. This week your baby will already be working hard and it will developing the placenta and amniotic sac. It will also develop a heart beat this week and gain circulation of blood through the body. This is also the week your baby will start to develop the brain as well as the nervous system, reproductive and cardiovascular system! Your baby is about 2 millimeters long and weighs less than one gram!

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15y ago
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7y ago

The fetus moves, kicks, swallows and can hear your voice. The skin is pink and transparent. Umbilical cord continues to grow and thicken to carry enough nourishment from the mother to the fetus - but it also can pass along hazards like tobacco, alcohol and other drugs. The placenta is now fully formed. By the end of the fourth month, the fetus is 6 to 7 inches long and weighs about 5 ounces.

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11y ago

It's still a embryo and will not be a fetus for several weeks yet. The embryo is about 0.014-0.04 inches in length. It's in about the second week of development and contains of about 150 cells. The embryo is being nourished by secretions from the uterine lining.

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11y ago

here is a link to a very detailed fetal development site.

http://www.ehd.org/movies-index.php

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12y ago

Like a full grown baby with all the parts but a lot skinnier. It just needs to grow some more.

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14y ago

I can help you out with what a fetus looks like, but not sure what species a "foetus" is. I hope you improve on your spelling before you raise children.

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15y ago

A small child.

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13y ago

small,and very cute

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Q: What does a fetus at 26 weeks look like?
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