In girl, the first menstruation begins at puberty and is called .....
Menarche
Menstrual cycle
Menopause
None
Menstrual cycle is controlled by
Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?
Lack of menstruation is caused due to
Menstrual flow occurs due to lack of
In the human female, menstruation can be deferred by the administration of