If the menstrual cycle is $30$ days long and menstruation begins on the $1$st day, when will ovulation occur (in $th$ day)?

The follicular phase is which phase of the menstrual cycle?

The corpus luteum in pregnancy has a long life. However,if fertilization does not take place,it remains active only for $10-12$ days. Explain.

In a $28$ day human menstrual cycle,ovulation occurs on

In females,the cessation of reproductive capacity occurs around the age of $45$ to $50$ years. What is this process called?

The first menstruation is called $........$,and in humans,the menstrual cycle ceases around the age of $50$ years,which is termed as $........$.