The substance secreted by the corpus luteum is
Hormone
Enzyme
Pheromone
Bile
When the ovulation is expected in a normal menstrual cycle?
Changes in $GnRH$ pulse frequency in femail is controlled by circulating levels of
Lack of menstruation is caused due to
What is menstrual cycle? Which hormones regulate menstrual cycle?
Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?