Signals for parturition originate from

Signals for parturition originate from
  1. both placenta as well as fully developed foetus
  2. oxytocin released from maternal pituitary
  3. placenta only
  4. fully developed foetus only

Solution

The signals for parturition originates from a fully developed foetus and placenta which induce mild uterine contraction. This triggers the release of oxytocin (birth hormone) from the maternal pituitary gland.

Asked in: NEET 2012 (Screening)

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