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fertilization happens in the fallopian tube. the zygote that forms the embryo. yhis enters in the uterus and become joined to de wall
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Is when the embryo inmplants in the wall of the uterus and the embryo develop inside the uterus.
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pregnancy last about nine months and is diveded into three phases of three months each: fist trimester, second trimester and third trimester.
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during the second week the embryo is surrounded and protected by a sack full of liquid, the amnion
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during this period the embryo is called foetus. It's skeleton, musculature and all the organs develop.
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at the end of the 7 months the foetus organs are already sufficently developed for it to srvive outsiude yhe mother
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is when the baby is ready to born.
