The human foetus expelled from the uterus of its mother, Biology

How is the human foetus expelled from the uterus of its mother:

The total time required for the embryonic and foetal development is called gestation period which is usually about 40 weeks. After this the foetus is expelled from the uterus.
This is a very complicated process.
The foetal harmones produced stimulate the contractions of uterus.
The contractions of the uterus are called labour pains.
The labour pains help in the expulsion of the foetus.
First the amnion ruptures releasing the amniotic fluid out.
Then the foetus is expelled out. Later the placenta is separated from the uterine walls and expelled out.
But the foetus is still attached to the uterus of the mother by the umbilical cord which is separated by docotor.

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