After ovulation,the Graafian follicle transforms into an endocrine organ known as:

The formation of polar bodies occurs during the formation of which of the following?

What is found between the spermatogonia in the seminiferous tubules?

$A$ : The most immediate effect of $FSH$ is the maturation of existing late primary or secondary follicle.
$R$ : $A$ rising level of $FSH$ causes the developing egg within the follicle to complete the first meiotic division to form a secondary oocyte.

What is the primary egg membrane of a mammal called?

Ejaculation of human male contains about $200 - 300$ million sperms,of which for normal fertility . . . . . . $\%$ sperms must have normal shape and size and at least . . . . . . $\%$ must show energetic motility.