In man developing embryo remains in

Select the correct option describing gonadotropin activity in a normal pregnant female.

$A$ : Synthesis of milk is stimulated by rise in the level of oxytocin.
$R$ : Oxytocin is released from the adenohypophysis under influence of hypothalamus.

What is foetal ejection reflex ? Explain how it leads to parturition ?

Give scientific reasons : When birth time is near, two chemical signals associated and produces real parturition pain / labour pain.

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