Gujarati
Hindi
2.Human Reproduction
medium

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

A

Release of oxytocin

B

Release of prolactin

C

Increase in estrogen and progesterone ratio

D

Synthesis of prostaglandins

(NEET-2015)

Solution

(b) : Process of parturition is induced by both nervous system and hormones secreted by the endocrine glands of the mother. The signals for child birth (parturition) originate from the fully developed foetus and placenta which induce mild uterine contractions called foetal ejection reflex. This causes quick release of oxytocin from the maternal posterior lobe of pituitary gland which induces labour pains. Prostoglandins, progesterone and estrogen also play a role. Prolactin is the hormone which induces lactation and has no role in parturition.

Standard 12
Biology

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.