1st Half Of Menstral Cycle Flashcards
What days are apart of the 1st half of the Menstral cycle?
Days 1-14
What is the 1st half of the Menstral cycle called?
Proliferative, follicular, or estrogenic phase
What happens to estrogen production during the 1st half of the Menstral cycle?
It decreases
No pregnancy
What does the anterior pituitary gland secrete during the 1st half of the Menstral cycle?
Secretes FSH
What does FSH do?
Stimulates ovarian follicles to grow and mature
What happens during day 1?
1st day of bleeding
Menstral flow
What happens during days 1 through 4-5?
Estrogen levels decrease
FSH releases - stimulates follicular growth and maturity
What happens during days 4-5?
Menstral flow is complete
Endo lining is ready for new growth ( proliferation )
What happens during days 5-14?
Follicles grow
During days 5-14, how many follicles begin to develop?
Usually 5-8 follicles
During days 5-14, what happens to the follicles?
Follicles fill with fluid and secrete increasing amounts of estrogen
FSH levels decrease
During days 5-14, how many follicles will reach maturity?
Usually only 1
What is the measurement of the one mature follicle?
2 cm in diameter on day 14
During days 5-14, what does estrogen trigger?
New growth of the endometrial lining ( proliferation )