Ch. 28 - Female Reproductive System Flashcards
What hormones do the ovaries produce?
estrogen, progesterone, relaxin, inhibin
What do follicles (in the ovarian cortex) consist of?
- oocytes in various stages of development
- follicular cells/granulosa cells
Describe development of follicle
primordial follicle primary follicle secondary follicle mature follicle corpus luteum corpus albicans
What is the theca folliculi?
outermost layer of cells; on basal lamina
What is the zona pellucida?
clear glycoprotein layer bt oocyte and granulosa cells
What is the corona radiata?
granulosa cells attached to zona pellucida; still attached to oocyte at ovulation
What is the antrum?
formed by granulosa cells secreting fluid
What are the stem cells that become mature follicles called?
oogonia (2n)
What is atresia?
the degeneration of germ cells produced by mitosis of oogonia
What do the oogonia that do not undergo atresia become?
develop into oocytes and stop in prophase I
When does meiosis I complete?
before ovulation, in mature follicle
When does meiosis II begin?
before ovulation, by secondary oocyte
What is the function of uterine/fallopian tubes?
- transport ova from ovaries to uterus
- site of fertilization
What is the function of fimbriae in the fallopian tubes?
sweep oocyte into uterine tube
What is the function of cilia in the fallopian tubes?
move oocyte along with peristalsis (from sm muscle of muscularis)
What is the function of non-ciliated peg cells in fallopian tubes?
have microvilli that secrete fluids to nourish ovum
When does fertilization usually occur?
within 24 hours after ovulation
When does the zygote reach the uterus?
about 7 days after ovulation
What are 5 functions of the uterus?
- transport of spermatozoa
- menstruation
- implantation of fertilized ovum
- dev of fetus during pregnancy
- labour