Chapter 28 (Female)

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42 Terms

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Female reproductive system
* ovaries produce 2nd oocytes and hormones
* uterine tubes transport fertilized ova
* uterus where fetal development occurs
* vagina and external genitalia constitute the vulva
* mammary glands produce milk
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Ovaries
* paired glands
* located in the upper pelvic cavity on either side of the uterus
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Reproductive ligaments
broad ligament suspends uterus from side wall of pelvis
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Regional histology
* tunica albuginea is capsule of dense connective tissue
* cortex is region just deep to tunica, containing follicles
* medulla is deeper region composed of connective tissue, blood vessels and lymphatics
* germinal epithelium is simple epithelial covering over the ovary
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Oogenesis
* occurs in the ovaries
* it results in the formation of a single haploid secondary oocyte
* the sequences includes reduction division, equatorial division, and maturation
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What hormone is looked for in pregnancy tests?
HCG
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Follicular stages
* primordial
* primary
* secondary
* graafian
* ovulation
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Corpus luteum
an ovulation wound filled in with hormone secreting cells
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Corpus albicans
white scar left after corpus luteum degenerates (when not needed)
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Corona radiata
granulosa cells attached to zona pellucida, still attached to oocyte at ovulation
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Fallopian Tubes
* 4 in tube extends from ovary to uterus
* transport ova from the ovaries to the uterus and are the normal sites of fertilization
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Infundibulum
open, funnel-shaped portion near the ovary
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Fimbriae
moving finger-like processes
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Ampulla
central region of fallopian tubes
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Isthmus
narrowest portion joins uterus
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Function of fallopian tubes
* fimbriae sweep oocyte into tube
* cilia and peristalsis move it along
* sperm reaches oocyte in ampulla, fertilization occurs within 24 hours after ovulation
* zygote reaches uterus about 7 days after ovulation
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Divisions of the uterus
* fundus
* body
* isthmus
* cervix
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Endometrium
* simple columnar epithelium
* stroma of connective tissue and endometrial glands
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Stratum functionalis
shed during menstruation
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Stratum basalis
replaces stratum functionalis each month
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Myometrium
3 layers of smooth muscle
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perimetrium
visceral peritoneum
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Hysterectomy
* surgical removal of the uterus
* indications for surgery include ovarian cysts, endometriosis, and cancer of cervix, uterus or ovaries
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Secretory cells of the mucosa of the cervix produce a ______
cervical mucus
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Thin cervical mucus
more receptive to sperm
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Thick cervical mucus
forms a cervical plug that physically impedes sperm penetration
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Vagina
* functions as a passageway for spermatozoa and the menstrual flow, the receptacle of the penis during sexual intercourse, and the lower portion of the birth canal
* lies between urinary bladder and rectum
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Vulva
the external genitalia
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Mammary Glands
* modified sweat glands that produce milk
* amount of adipose determines size of breasts
* open by lactiferous ducts at the nipple
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Breast cancer
second leading cause of cancer death in the U.S.
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Mammography
ultrasound determines if lump is benign, fluid filled cyst, or solid and possibly malignant
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Breast Cancer risks
* family history
* no children
* don’t breastfeed
* radiation
* alcohol/smoking
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Treatment of breast cancer
* lumpectomy
* radical mastectomy
* radiation or chemotherapy
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Functions of estrogens
* promotion of the development and maintenance of female reproductive structures, secondary sex characteristics, and the breasts
* increase protein anabolism and build strong bones
* inhibit release of GnRH by the hypothalamus and secretion of LH and FSH
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Relaxin
used to relax the uterus by inhibiting contractions; relaxes pubic symphysis and helps dilate the uterine cervix to help with birth
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Inhibin
inhibits secretion of FHS and GnRH and to a lesser extent, LH; important on decreasing secretion of FHS and LH towards the end of the uterine cycle
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Ovulation
rupture of follicle and release of 2nd oocyte on day 14
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Cause of ovulation
increasing levels of estrogen stimulate release of GnRH which stimulates anterior pituitary to release more LH
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Signs of ovulation
* increase in basal body temp
* changes in cervical mucus
* cervix softens
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time between ovulation and onset of next menstrual period
14 days
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If fertilization does not occur
corpus albicans is formed; as hormone levels drop, secretion of GnRH, FSH and LH rise
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If fertilization does occur
developing embryo secretes human chorionic gonadotropin (hCG) which maintains health of corpus luteum and its hormone secretions