Secretion of progesterone by corpus luteum is initiated by
$LH$
$MSH$
Testosterone
Thyroxine
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 |
What is called menstrual cycle ? Describe its phases ?
The phase of menstrual cycle in humans that last for $7-8$ days is
No new follicles develop in the luteal phase of the menstrual cycle because
During menstruation the level of progesterone in blood is