What role does pituitary gonadotrophi...

What role does pituitary gonadotrophins play during follicular and ovulatory phases of menstrual cycle ? Explain the shifts in steroidal secetions .

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Hormonal control of follicular phase:
FSH of pituitary hormone transforms the primary follicle into Graafian follicle. FSH stimulates follicular cells of Graafian follicle to secrete estrogens. . Estrogens cause proliferation of endometrium which thickens and becomes more vascular and glandular.
Hormonal control of ovulatory phase: Estrogens stimulates pituitary gland to secrete LH. LH surge causes ovulation from the ovary on 14th day of menstrual cycle. into corpus luteum by luteinisation inside the ovary. LH also stimulates corpus luteum to secrete progesterone hormone to help in implantation, placentation and maintenance of pregnancy.

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Follicular phase of menstrual cycle is the other name of :

Proliferative phase

Secretory phase

Luteal phase

Menstruation

LH surge occurs during phase of menstrual cycle.

Menstrual phase

Beginning of proliferstive phase.

Just before end of prodiferation phase

At the middle of the cycle.

LH surge occurs during phase of menstrual cycle

Menstrual phase

Beginning of proliferative phase

Just before end of proliferation phase

At the middle of the cycle