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Topic:Menstrual Cycle

Jessica BongsamKu Nurfarhanim1PISMP SCIENCE

What's a normal menstrual cycle?

• Average menstrual cycle: 28

days

• Function:  In preparation for

the release of egg,

fertilization and

implantation.

Hormone involve

Gonadotrophin-releasing

hormone

Follicle stimulating hormone

Luteinising hormone

Oestrogen

Progesteron

Hormone

- Gonadotrophin-releasing

hormone

: produced in the

hypothalamus, which is in

the brain

- Follicle stimulating hormone

: produced in the pituitary

gland, which is also in the

brain

- Luteinising hormone

: produced in the pituitary

gland.

- Oestrogen

: produced in the ovaries

- Progesterone 

: produced in the ovaries.

Phase involve in menstrual

cycle

Menstrual phase (Day 1 – 5)

Proliferative phase ( Day 6-

14)

Secretory phase (Day 15-

21)