When the ovulation is expected in a normal menstrual cycle?
$10-17$ day of menstrual phase
$12-14$ day of menstrual phase
$10-20$ day of menstrual phase
$6-7$ day of menstrual phase
Arrange the events of menstrual cycle as they occur
$I.$ Secretion of $FSH$
$II.$ Growth of corpus luteum
$III.$ Growth of follicle and oogenesis
$IV.$Ovulation
$V.$ Sudden increase in level of $LH$
In girl, the first menstruation begins at puberty and is called .....
$A$ : Corpus luteum begins to atrophy after a short life of $10 \;to \;14$ days, if fertilisation does not occur.
$R$ : Luteolysis may be due to withdrawal of $LH$ support
Corpus luteum is the source of secretion of
Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?