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

  • Option 1)

    Release of oxytocin

  • Option 2)

    Release of prolactin

  • Option 3)

    Increase in estrogen and progesterone ratio

  • Option 4)

    Synthesis of prostaglandins

 

Answers (1)

Release of prolactin enables females to produce milk.As learnt in

Foetal ejection reflex. -

The signals for parturition originate from the fully developed foetus and the placenta which induce mild uterine contractions called foetal ejection reflex.

- wherein

This triggers release of oxytocin from the maternal pituitary. Oxytocin acts on the uterine muscle and causes stronger uterine contractions, which in turn stimulates further secretion of oxytocin.

 

 


Option 1)

Release of oxytocin

This option is incorrect.

Option 2)

Release of prolactin

This option is correct.

Option 3)

Increase in estrogen and progesterone ratio

This option is incorrect.

Option 4)

Synthesis of prostaglandins

This option is incorrect.

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