Signals from fully developed foetus and place | vedclass

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(B) Parturition is induced by a complex neuroendocrine mechanism.Signals for parturition originate from the fully developed foetus and the placenta,wh

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Oxytocin from maternal pituitary

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(B) Parturition is induced by a complex neuroendocrine mechanism.Signals for parturition originate from the fully developed foetus and the placenta,which induce mild uterine contractions called the foetal ejection reflex.This reflex triggers the release of $Oxytocin$ from the maternal posterior pituitary gland.$Oxytocin$ acts on the uterine muscle and causes stronger uterine contractions,which in turn stimulate further secretion of $Oxytocin$.The stimulatory reflex between the uterine contraction and $Oxytocin$ secretion continues,resulting in stronger and stronger contractions,eventually leading to the expulsion of the baby out of the uterus through the birth canal.

Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of

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