Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?
Maintenance of the hypertrophical endometrial lining
Maintenance of high concentration of sex hormones in the blood stream
Retention of welldeveloped corpus luteum
Fertilisation of the ovum
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.
Ovulation takes place in/on
What role does pituitary gonadotropins play during follicular and ovulatory phases of menstrual cycle ? Explain the shifts in steroidal secretions.
Menstruation cycle occurs
Ovulation in mammals is caused by