Cessation of menstrual cycle in the human female is known as

In the menstrual cycle,the level of progesterone reaches its maximum in the . . . . . .

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

The diagram below shows various events during the menstrual cycle. Identify the hormones $P, Q, R,$ and $S$.

When is the $LH$ surge observed during the menstrual cycle?

Which one of the following events is correctly matched with the time period in a normal menstrual cycle?