The placenta helps in the maintenance of pregnancy by secreting a hormone, known as
Thyroxine
Estrogen
Progesteron
Testosterone
Mention the importance of $LH$ surge during menstrual cycle.
Menstruation cycle occurs
Which of the following hormone levels will cause release of ovum (ovulation) from the grafflan follicle$?$
Corpus luteum in mammals is present in
The secretory phase in the human menstrual cycle is also called