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Doctors inject oxytocin hormone for the strong contraction of uterine wall.$Parturition$$(i)$ The average duration of human pregnancy is about $9\; mo

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Oxytocin

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Doctors inject oxytocin hormone for the strong contraction of uterine wall.$Parturition$$(i)$ The average duration of human pregnancy is about $9\; months$ which is called the gestation period$(ii)$ The act of expelling the full term foetus from the mother's uterus at the end of gestation period is called parturition$(iii)$ It is induced by a complex neuroendocrine mechanism $(iv)$ Parturition signals originates from the fully developed foetus and the palcenta, which induce mild uterine contractions called foetus ejection reflex $(v)$ This triggers the release of oxytocin from the maternal pituitary $(vi)$ Oxytocin induces stronger uterine muscle contractions $(vii)$ Relaxin increases the flexibility of the pubic symphysis and ligaments that helps to dilate the uterine cervix during labour pain $(viii)$ This leads to the expulsion of baby

Hormone injected by doctors to induce delivery is

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