Which of the following layers in an antral follicle is acellular?

Failure of descending testis into scrotum is known as

In the ovum of rabbit, graafian follicle is

$A$ : 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 foetal ejection reflex.

Vaginal orifice, urethral orifice are open in