Which one of the following events is correctly matched with the time period in a normal menstrul cycle
Release of egg : $5^{th}$ day
Endometrium regenerates : $5- 10$ days
Endometrium secretes nutrients for implantation : $11-18$ days
Rise in progesterone level : $1 -15$ days
Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Endometrium is necessary for implantation of blastocyst.
Reason $R$: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.
In the light of the above statements, choose the correct answer from the options given below:
No new follicles develop in the luteal phase of the menstrual cycle because
Lack of menstruation is caused due to
Why are menstrual cycles absent during pregnancy ?
The menstrual cycle in normal adult woman is of