NEET 2010 Biology question

The signals for parturition originate from

(1)Placenta as well as fully developed foetusCorrect
(2)Oxytocin released from maternal pituitary
(3)Fully developed foetus only
(4)Placenta only

Answer: (1)

Solution

According to NCERT, parturition is induced by a complex neuroendocrine mechanism. The signals for parturition originate from the fully developed foetus and the placenta, which induce mild uterine contractions called the foetal ejection reflex. This triggers the release of oxytocin from the maternal

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Question ID VK-090643