Topic: Pregnancy, placenta, parturition, lactation· Reproduction

Which of these is not an important component of initiation of parturition in humans ?

1. Increase in estrogen and progesterone ratio

2. Synthesis of prostaglandins

3. Release of Oxytocin

4. Release of Prolactin

Doubtly Asked 30 Oct 2026 NEET UG 2021 Practice test neet Save WhatsApp Report

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Answer: 4. Release of Prolactin

Parturition is initiated by foetal signals, rise in oestrogen to progesterone ratio, prostaglandin synthesis and oxytocin release causing uterine contractions. Prolactin acts in milk production, not in initiating parturition.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Which of these is not an important component of initiation of parturition in humans ?

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