When released from the ovary, a human egg contains:

The mother germ cells are transformed into a mature follicle through a series of steps. Provide the missing steps in the blank boxes.
$\boxed{\text{Oogonia}} \to \boxed{A} \to \boxed{\text{Primary follicle}} \to \boxed{B} \to \boxed{C} \to \boxed{\text{Mature or Graafian follicle}}$

After ovulation, the Graafian follicle transforms into which of the following?

What is the process of physiological maturation of spermatozoa in the female reproductive tract,which enables them to fertilize the ovum,called?

The hormone which acts on Sertoli cells and stimulates the process of spermiogenesis is

In the given diagram of human sperm,identify the functions of the labelled parts $A$,$B$ and $C$.