The first menstruation which begins at puberty is called

Define the following:

Amenorrhea

The graph given below shows the level of the ovarian hormones in a normally menstruating woman during the follicular phase. Name ‘A’ and ‘B’.

Arrange the phases of the menstrual cycle in the correct order.

$1)$ Proliferative
$2)$ Menstrual
$3)$ Ovulatory
$4)$ Secretory

The graph given below shows the level of the ovarian hormones in a normally menstruating woman during the follicular phase. Name ‘A’ and ‘B’.

Reconstruct the graph showing the level of hormones in luteal phase.