Lecture 39: Reproductive Systems: Female A&P

16 terms by AlexS10

Create a new folder

Advertisement Upgrade to remove ads

Oogonia

---:
-Germ cells migrate to the ovary and become oogonia
-Oogonia undergo mitosis (divide) most degenerate (atresia)
-Some develop into primary oocytes and are inactive until puberty
200,000-2mil present at birth
40,000 remain at puberty
400 mature during a woman's life
-Each month hormone release causes several follicles to mature
-Penetration by sperm -> fertilized egg
-No penetration by sperm -> dies

Ovary

-Composed of ovarian follicles which are sac-like structures
-Each follicle consists of
-Oocyte = mature egg
-Follicular cells = surround the oocyte

Ovarian follicle

-Follicle is basic structural unit in ovary
-Developing follicle contains single maturing oocyte or egg
-Follicle is also primary endocrine tissue in the ovary during the first half of the ovarian cycle when its synthesizes and secretes estradiol

estradiol production

Two-cell model of --- ---:
Both theca and granulosa cells (as well as LH and FSH) are necessary for estradiol synthesis by mature ovarian follicle

Theca Cell

--- --- cannot convert andostenedione to estradiol

Granulosa cell

--- --- cannot convert cholesterol to androstenedione

Ovarian cycle

-Total supply of eggs are present at birth
-Ability to release eggs begins at puberty
-Reproductive ability ends at menopause
-Oocytes are matured in developing ovarian follicles

follicles

Cohort of --- recruited to grow:
-Proliferation of granulosa cells
-Theca cells

Antrum formation

--- ---:
-Fluid-filled space
-Growth stimulated by FSH & LH

Mature follicle

--- ---:
Estradiol production requires LH and FSH

Ovulation

Wall of follicle and ovary broken down by proteases, collagenases, and prostaglandins

Follicle ruptures

--- ---:
-Oocyte as just completed first meiotic division
-Ovum released into abdominal cavity

Luteinization

---:
Follicular wall left behind will transform into corpus luteum under influence of LH

Luteal phase

--- ---:
Corpis luteum produces progesterone and estrogen

Uterus

Histology of the ---:
Endometrium
-Stratum functionalis: shed during menstruation
-Stratum basalis: replaces stratum functionalis each month
Myometrium
-3 layers of smooth muscle
Perimetrium
-Visceral peritoneum

Uterine Cycle

--- ---:
-Menses: degeneration and sloughing of endometrium functional zone (menstruation)
-Proliferative phase: regrowth of endometrium
-Secretory phase: endometrial glands secrete mucous in response to progesterone and estrogen to prepare for ovum
-If an ovum does not attach, the layer is sloughed away

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set