Describe the process of parturition in humans.
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Parturition:
The average duration of human pregnancy is about 9 months which is called the gestation period.
The act of expelling the full term foetus from the mother’s uterus at the end of gestation period is called parturition.
It is induced by a complex neuroendocrine mechanism.
Parturition signals originate from the fully developed foetus and the placenta which induce mild uterine contractions called foetal ejection reflex.
This triggers the release of oxytocin from the maternal pituitary.
Oxytocin induces stronger uterine muscle contractions which lead to expulsion of the baby from the uterus through the birth canal.
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