On which layer of the uterus does oxytocin exert its maximum effect?

Which type of antibody is present in colostrum?

Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of

Under the influence of oxytocin,which layer of the uterus exhibits strong contractions during parturition?

The signals for parturition originate from which of the following?

$A$: Corticotrophin-releasing hormone is a part of the clock that establishes the timing of birth.
$R$: The signals for parturition originate from the fully developed foetus and placenta,which induce mild uterine contractions called the foetal ejection reflex.