Menstrual cycle Flashcards
Menstrual cycle
Reproductive cycle in female primates
Menarche
First menstruation that begins at puberty
Interval
28/29 days
Menstrual cycle
Events starting from one menstruation till the next one
Menstrual phase
Menstrual flow occurs
3-5 days
-breakdown of endometrial lining
Follicular phase
Primary follicle grows to become graffian follicle
Endometrium of uterus regenerates through proliferation
Hormonal changes -follicular
LH and FSH levels increase
Stimulates follicular development
Stimulates secretion of estrogen
Ovulatory phase
LH and FSH attain peak levels at about 14th day
LH surge induces rupture of graffian follicle
Relese of ovum
Luteal phase
Remaining parts of graffian follicle form corpus luteum
Corpus luteum
Secretes large amounts of progesterone necessary for maintenance of endometrium.