The following graph of relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones.

In woman cessation of menstruation occurs at the age of

Ripe ova are shed by ovaries into

What role does pituitary gonadotropins play during follicular and ovulatory phases of menstrual cycle ? Explain the shifts in steroidal secretions.

No new follicles develop in the luteal phase of the menstrual cycle because