Question

Why does menstruation only occur if the released ovum is not fertilised? Explain.

Hint:

Menstruation is triggered by the absence of fertilisation, causing hormonal changes that lead to uterine lining shedding.

Answer 1

\begin{itemize} \item Absent fertilization causes corpus luteum degeneration, decreasing progesterone. This hormonal decline initiates the breakdown and expulsion of the uterine lining via menstruation.\end{itemize}% Quick tip