Ovulation does not occur during pregnancy in the human female because
The follicles are not influenced by the level of progesterone in the blood
The corpus luteum and later the placenta produce large amounts of progesterone
The corpus luteum generates as luteinising hormone is no longer produced
The embryo produces hormones which retard the production of maternal follicle stimulating hormones
A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.
If after ovulation no pregnancy results, the corpus luteum
Cessation of menstrual cycle in the human female is known as
The menstrual cycle in normal adult woman is of