Reproductive Cycle Flashcards
What is oogenisis?
Formation and development of gametes controlled by hormones from the hypothalamus and anterior pituitary.
What hormones released by the ovaries control the uterine cycle?
Steroid hormones
What happens if fertilization does not occur?
The levels of ovarian hormones decrease.causes the endometrium to slough off.
What is the general encompassing term for female reproductive cycle?
Ovarian and uterine cycles.
The hormones that regulate them.
Related cyclical changes in the breast and cervix.
How long does the female reproductive cycle last?
24-34 days and cycles in both uterus and ovaries
What are the four phases of the reproductive cycle?
Menstrual phase
Preovulatory phase
Ovulation
Postovulatory phase
When is the menstrual cycle?
1st 5 days of the cycle when several ovarian follicles enlarge.
Menstrual flow of 50-150ml from endometrium.
Occurs because of declining levels of progesterone and estrogen.
Endometrium sloughing off.
What is the preovulatory phase?
Days 6-13
Time between menstruation and ovulation.
Follicles grow under the influence of FSH.
Secrete estrogen and inhibin.
Estrogen and inhibin from the dominant follicle decreases secretion of FSH.
Dominant follicle becomes mature follicle and continues to enlarge until ready for ovulation.
Follicle continues to increase production of estrogen under the influence of LH.