Female Reproductive System Flashcards
What is the purpose of the ovaries?
they produce, store and release eggs into the fallopian tubes
what is ovulation
a phase of the female menstrual cycle that involves the release of an egg from one of the ovaries. It generally occurs about two weeks before the start of the menstrual period.
what are the 2 female sex hormones
estrogen and progesterone
what does estrogen do
It regulates the menstrual cycle and affects the reproductive tract
what does a girl’s development depend on?
the growth hormones produced by the pituitary gland (brain)
what are the two hormones secreted by the brain during puberty?
follicle stimulation hormone (FSH)
luteinizing hormone (LH)
what does FSH do in women
FSH stimulates follicles on the ovary to grow and prepare the eggs for ovulation.
what does LH do in women
tells the ovaries to release a mature egg.
what is oogenesis
the production of ova by the ovaries (miosis)
what are the three phases of the menstrual cycle
preovulatory phase
ovulatory phase
postovulatory phase
describe the preovulatory phase
-From days 2 to 6, menstrual flow takes place (menstruations).
-The pituitary gland secretes the hormone FSH, which stimulates the development of follicles in the ovaries.
- The follicle develops and begins to make estrogen, which in turn thickens the lining of the uterus (endometrium) with blood and tissue.
-When estrogen levels are high, the pituitary gland stops making FSH and begins
making LH.
describe the ovulatory phase
The increased amount of LH allows the follicle to break and release the secondary egg (ovulation).
describe the postovulatory phase
-After the follicle has burst, estrogen levels drops slightly.
-The drop in LH cause the follicle to transform in a corpus luteum.
-The corpus luteum secretes progesterone and estrogen to continue to thicken the lining of the uterus. This prepares the uterus to receive the fertilized egg.
-High levels of progesterone and estrogen reduce the production of FSH and LH.
-When fertilization occurs, the corpus luteum continues to secrete estrogen and
progesterone to maintain the blood of the uterus.
-When fertilization does not occur, the corpus luteum breaks down, estrogen and progesterone levels decrease, the uterus lining is shed during menstruation and
a new cycle begins.
list the secondary sex characteristics in women
-growth
-body odour
-acne
-body hair
-menstruation
-mood swings
-breasts
What is menstruation
the regular discharge of blood and mucosal tissue from the inner lining of the uterus