Which one of the following is the correct matching of the events occurring during menstrual cycle?
Proliferative phase : Rapid regeneration of myometrium and maturation of Graafian follicle
Secretory phase : Development of increased secretion corpus luteum and of progesterone
Menstruation : Breakdown of myometrium and ovum not fertilised
Ovulation : $LH$ and $FSH$ attain peak level and sharp fall in the secretion of progesterone
Menstrual cycle is controlled by
Match the columns.
Column 1 | Column II |
$(a)$ $6-14$ days | $(1)$ It is known as menstrual cycle |
$(b)$ $1-5$ days | $(2)$ Polar body is down |
$(c)$ $15-28$ days | $(3)$ It is known as proliferative phase |
$(4)$ Endometrium is prepared forimplantation of embryo |
Proliferation of endometrium of uterus in controlled by
Why are menstrual cycles absent during pregnancy ?
Ovulation does not occur during pregnancy in the human female because