Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2015ZoologyHuman ReproductionActual

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

Options

  1. AIncrease in estrogen and progesterone ratio
  2. BSynthesis of prostaglandins
  3. CRelease of oxytocin
  4. DRelease of prolactin

Correct answer

D. Release of prolactin

Step-by-step solution

Prolactin has no role in parturition, it helps in lactation process, (lactogenic hormone), development of mammary glands (mammotropin) & maintenance of corpus luteum (leutotropin).

Practice Human Reproduction on Quantrex Academy →

More from Human Reproduction

Which of the following structure is not a part of the male reproductive system ? 2026Spermatogonia undergo a series of cell divisions to produce sperms. Select the correct statements from the following : A. Spermatogonia always undergo meiotic cell division. B. Pri 2026Which of the following hormone is not secreted by human placenta ? 2026Match List I with List II related to embryonic development at various months of pregnancy : List I List II A. The foetus movement starts and hair appears on the head I. 24 weeks of 2026Arrange the following cell layers/structures around the female gamete, from outer to inner side : A. Zona pellucida B. Perivitelline space C. Corona radiata D. Plasma membrane of o 2026The covering of ovum at ovulation is __________. 2026Given below are two statements : Statement I : Ovulation is caused by LH surge leading to rupture of Graafian follicles. Statement II : Graafian follicle remaining after ovulation 2026Find the correct statement : (A) In human pregnancy, the major organ systems are formed at the end of 12 weeks. (B) In human pregnancy the major organ systems are formed at the end 2025 Full Human Reproduction list All NEET PYQs