Ovulation in the human female normally takes place during the menstrual cycle
At the beginning of the proliferative phase
At the end of the proliferative phase
At the mid secretory phase
Just before the end of the secretory phase
Corpus luteum is the source of secretion of
Why are menstrual cycles absent during pregnancy ?
Select the incorrect statement.
Corpus luteum in pregnancy has a long life. However, if fertilisation does not take place, it remains active only for $10-12$ days. Explain.
Menstrual cycle occurs in