Shared Flashcard Set

Details

Histo: Female Reproductive Organs: Uterus/Cervix/Vagina
Morrow 5/11/11 lecture 2 hrs (+ 2 not real hours)
153
Histology
Undergraduate 4
05/04/2011

Additional Histology Flashcards

 


 

Cards

Term
1) female reproductive/genital tract
2) gonads (ovaries)
3) breasts
Definition
list the components of the female reproductive system
Term
1) production of ova
2) incubation of fertilized ovum/fetus
3) post partum lactation
Definition
list the functions of the female reproductive system
Term
ova
Definition
name of female gamete
Term
gametogenesis, more specifically oogenesis
Definition
process of creating an ovum
Term
menarche - occurs at beginning of puberty
Definition
initiation of menstrual cycle & sexual maturity, what is it, and when does this occur?
Term
menopause
Definition
cessation of the menstrual cycle ~age 50
Term
GnRH (and subsequently FSH & LH)
Definition
what controls both menarche and menopause?
Term
hypothalmus
Definition
where does GnRH come from?
Term
FSH and LH come from the anterior petuitary
Definition
where do the gonadotropic hormones come from?
Term
ovaries
Definition
paired organs lateral to uterus on posterior wall of the abdomen, sites of oogenesis
Term
3 x 1.5 x 1 cm
Definition
how big is a human ovary typically?
Term
pelvic wall - suspensory ligament
uterus - ovarian ligament
broad ligament - mesovarium
Definition
how do ovaries attach to the pelvic wall? the uterus? the broad ligament?
Term
humans: every 28 days
other species: seasonally or intervals throughout the year
Definition
in humans, how often does ovulation occur? in other species?
Term
FSH & LH from the anterior petuitary
Definition
what hormones control ovulation?
Term
endocrine, secrete estrogen and progesterone
Definition
are ovaries endo/exo/para crine organs? what do the ovaries secrete?
Term
tunica albuginea: fibrous connective tissue covered by simple squamous-cuboidal mesothelium
Definition
name and describe the capsule surrounding the ovaries
Term
hilus
Definition
where blood vessels, lymphatics, and nerves enter the ovary
Term
Wolffian ducts, and hilus cells
Definition
what embryonic vestigial remnants might be seen in the ovary?
Term
hilus cells
Definition
similar to interstitial cells(Leydig) with foamy, eosinophilic cytoplasm and brown lipofuscin granules
Term
cortex (periphery)
Definition
where follicles are found in the ovary
Term
follicles
Definition
contain female gametes (Ova) at various stages of development
Term
1) loose CT stroma +
2) fibroblasts +
3) collagen fibers +
4) ocassional smooth muscle bundles +
5) nerves & blood vessels
Definition
what is found in the medulla of the ovary?
Term
1) corpus hemorrhagicum
2) corpus luteum
3) corpus albicans
Definition
list the post-ovulatory follicles
Term
corpus hemorrhagicum
Definition
post ovulatory follicle containing blood
Term
corpus luteum
Definition
post ovulatory follicle that has an endocrine function "yellow body"
Term
corpus lutem, produces estrogen and progesterone
Definition
what post ovulatory follicle produces endocrine products? what does it produce?
Term
corpus albicans
Definition
post ovulatory follicle that is mostly fibroblastic connective tissue "white body"
Term
atretic follicles
Definition
connective tissue scars surrounded by glassy membrane (thickened basement membrane)
Term
atretic follicles
Definition
these follicles do not take up stain and appear pinkish gray
Term
oogonia
Definition
primordial germ cells in fetal development
Term
the yolk sac, they migrate to the ovarian cortex
Definition
where are oogonia formed? where do they go?
Term
4th or 5th month of fetal development, form ~400,000 total
Definition
when do oogoina undergo mitosis?
Term
when they mature into primary oocytes
Definition
when do oogonia undergo meiosis?
Term
they are called primary oocytes(primordial follicles), and stop at prophase 1
Definition
what stage of meiosis do oogonia stop at?
Term
until after sexual maturity at puberty, when they are ready to ovulate (12-50 yrs later)
Definition
how long do primary oocytes remain in prophase 1?
Term
FSH from anterior petuitary
Definition
what stimulates follicle development & maturation?
Term
follicle development and maturation is stimualted by FSH release
Definition
what happens int he follicular phase of the menstrual cycle?
Term
several develop, only 1 is ovulated
Definition
how many follicles begin to develop each month? how many ovulate?
Term
1) primordial follicle
2) primary follicle
3) secondary follicle
4) mature/Graafian follicle
5) ovulation
6) ovum
Definition
list the phases of follicular maturation (in order)
Term
prophase 1
Definition
what stage of meiosis is a primodial follicle?
Term
a primary oocyte
Definition
what type of oocyte is found in a primodial follicle?
Term
primodial follicles only have 1 layer of follicular cells, primary follicles have several layers (called the zona granulosa)
Definition
compare the number of layers of squamous/cuboidal follicular cells surrounding the oocyte in primordial follicles vs primary follicles
Term
Balbiani body
Definition
cell organelles (golgi, ER, mitochondria & lysozomes) in the cytoplasm of a primary oocyte
Term
large nucleus with prominent nucleolus and abundant cytoplasm
Definition
when the primary oocyte resumes meiosis, what is the nucleus like?
Term
they are eosinophillic granules located just below the plasma membrane of the primary oocyte that contain proteases


they participate in the cortical reaction following penetration by sperm
Definition
where are cortical granules found? what do they do?
Term
they have endocrine function, secrete estrogen and a little FSH: found in zona granulosa (beginning in the primary follicle)
Definition
what do granulosa cells do, where are they found?
Term
theca folliculi
Definition
fibroblast-like cells of ovarian stroma surrounding granulosa cells from an organized layer called the ____
Term
zona pellucida
Definition
clear zone around the oocyte -extracellular layer composed of glycoproteins & proteoglycans
Term
filopodia
Definition
what forms a communication between granulosa cells and the oocyte?
Term
filopodia
Definition
microvilli from oocyte & slender cytoplasmic processes( ______ ) from follicular cells extending into the zona pellucida
Term
antrum
Definition
fluid filled chamber that develops within the zona granulosa
Term
liquor folliculi
Definition
another name for follicular fluid filling the antrum
Term
seocondary
Definition
when the antrum is visible, what kind of follicle is it?
Term
cumulus oophorus
Definition
thick layer of granulosa cells surrounding the oocyte in the secondary follicle (hill around the oocyte)
Term
zona is around the antrum, cumulus oophorus is round the oocyte --both made of ganulosa cells
Definition
what is the difference between the zona granulosa and the cumulus oophorus?
Term
steroid secreting cells (they make androgens such as estrogen and progesterone)
Definition
what does the theca interna differentiate into?
Term
a fibroblastic CT capsule around the follicle
Definition
what is the theca externa?
Term
when it is a secondary follicle
Definition
when does the ovarian stroma surrounding the follicle differentiate into theca externa and theca interna?
Term
when the follicle it is inside becomes a mature/graafian follicle (right before ovulation)
Definition
when does the oocyte enter the second meiotic division?
Term
primary oocyte
Definition
what kind of oocyte is in a secondary follicle?
Term
when it enters the second meiotic division
Definition
when does a primary oocyte bcome a secondary oocyte?
Term
corona radiata

this comes out with the egg into the abdominal cavity during ovulation
Definition
in the mature follicle, the antrum is VERY large and several layers of cumulus oophorus surround the oocyte called the ______
Term
just prior to ovulation
Definition
when does the completion of the first meiotic division of the egg occur?
Term
secondary oocyte in metaphase 2
Definition
at ovulation, what kind of oocyte is it, and what stage of meiosis is it in?
Term
in the fallopian tube after ovulation
Definition
where does the second meiotic division occur?
Term
in 4th/5th month of female fetus, oocyte stops in prophase 1, then just before ovulation, the egg pauses at metaphase 2
Definition
when does the egg "pause" in development, and what stage of mitosis/meiosis does it stop at?
Term
peak in estrogen and LH secretion
Definition
what stimulates ovulation(rupture of the Graafian follicle)?
Term
48 hrs prior to ovulation
Definition
when does the pre-ovulatory LH surge occur?
Term
infundibulum
Definition
bell-shaped, modified distal end of the uterine horn
Term
fimbriae
Definition
finger-like projections on the infundibulum
Term
not until after the ovum is penetrated by sperm
Definition
when is the second meiotic division of the egg completed?
Term
1 from meiosis 1, and 1 or 2 from meiosis 2, depending on whether the first polar body divides or not
Definition
when do the polar bodies come off?
Term
corpus hemorrhagium
Definition
after ovulation, the ruptured follicle fills with blood and forms a clot called the ______
Term
corpus luteum
Definition
what does the corpus hemorrhagium turn into under the influence of LH from the anterior petuitary?
Term
lutein
Definition
the corpus luteum is composed of steroid secreting _____ cells
Term
small-from theca interna
large-from granulosa lutein cells of zona granulosa
Definition
where are the smaller theca lutein cells from? the larger theca lutein cells?
Term
theca: estrogen
granulosa: estrogen and progesterone

maintains the uterine lining
Definition
what do theca lutein cells secrete? what do granulosa lutein cells secrete? what does this do?
Term
with: 12-14 days
without: 12 weeks
Definition
how long does a functioning corpus luteum last with pregnancy? without pregnancy?
Term
corpus albicans
Definition
when the corpus luteum involutes, what does it become?
Term
corpus albicans
Definition
inactive, degenerate corpus luteum
Term
an atretic follicle -> CT corpus fibrosum
Definition
if a follicle does not mature, what does it become? after that?
Term
a glassy membrane (thickening of the basement membrane)
Definition
what surrounds the corpus fibrosum?
Term
lots: granulosa cell tumors are an example
Definition
what types of cells can ovarian tumors come from?
Term
granulosa cell tumor
Definition
most common MALIGNANT tumor of the female reproductive tract
Term
granulosa cell tumors
Definition
accounts for 18% of all gynecologic neoplasms
Term
in their 50s
Definition
when do women usually get granulosa cell tumors?
Term
granulosa cell tumor
Definition
difficult to detect, usually not diagnosed until extensive or metastasized, diagnosed based on an abdominal mass, x-rays, and possibly estrogen if it is a functional tumor
Term
surgical removal & chemo/radiation (not a good prognosis
Definition
what is the treatment for granulosa cell tumors?
Term
generally carcinoma
Definition
what type of tumors are ovarian tumors typically?
Term
fallopian tubes or uterine horms
Definition
what is another name for the oviducts?
Term
smooth muscle wall with mucosal lining and outer layer off loose connective support tissue
Definition
what is the similar basic structure of the oviducts, uterus, and vagina?
Term
infundibulum(trumpet shaped part) -> ampulla(bend) ->isthmus (narrow part right before uterus)
Definition
before the oviducts hit the uterus, what are the parts of the tube called?
Term
1)peristaltic contractions of the circular and longitudinal smooth muscle layers
2)beating of ciliated columnar epithelial cells lining the mucosa of the ovaduct
Definition
what enhances the movement of the ova in the ovaduct & minimizes ectopic implantation/pregnancy?
Term
1) ciliated columnar epithelial cells
2) non ciliated columnar secretory peg cells
Definition
what kind of cells are found lining the mucosa of the ovaduct?
Term
peg cells
Definition
cells in the ovaduct that provide nutrient rich secretions to nourish the oocyte
Term
the ampulla of the ovaduct
Definition
where does fertilization of the ova usually occur?
Term
pear shaped, 7 x 3 x 3 cm long
Definition
describe the shape and dimensions of the uterus
Term
myometrium:
inner longitudinal
middle circular
outer longitudinal
Definition
name the smooth muscle of the uterus, and name the 3 layers of it(circular/longitudinal...)
Term
both
Definition
does the myometrium undergo hypoplasia or hyperplasia during pregnancy?
Term
oxytocin from POSTERIOR petuitary
Definition
what enhances smooth muscle contractions of the myometrium at parturition?
Term
endometrium
Definition
highly modified, layered mucosa of the uterus
Term
simple, ciliated columnar epithlium supported by stroma containing numerous simple, highly coiled glands
Definition
what type of "-thelia" is the endometrium?
Term
straight and spiral
Definition
what arteries supply the endometrium?
Term
1)stratum basalis &
stratum functionalis:
2)stratum spongiusum
3) stratum compactum
Definition
name the 3 layers of the endometrium
Term
stratum basalis
Definition
layer of endometrium adjacent to the myometrium, NOT shed during menstruation
Term
stratum spongiosum
Definition
thick and spongy intermediate layer of endometrium
Term
stratum compactum
Definition
thin superficial layer of endometrium
Term
stratum spongiosum & stratum compactum
Definition
what layers make up the stratum functionalis?
Term
stratum functionalis
Definition
what layers of endometrium are shed in menstruation?
Term
straight arteries
Definition
short arteries found within the basal layer of epithelium ONLY, not shed with endometrial lining during menstruation
Term
spiral arteries
Definition
coiled thick-walled arteries with numerous branches, respond to hormonal changes in the menstrual cycle
Term
a progesterone surge at the end of the menstrual cycle causes vasoconstriction and ischemia of the mucosa that causes the stratum functionalis to slough off with the spiral arteries
Definition
why does the endometrium shed in the uterus?
Term
estrogen and progesterone, gets 1-6 mm thick
Definition
what influences the thickness of the endometrium and how thick does it get?
Term
1) primarily ebryonic tissue of the fetus
2) also from uterine endometrium
Definition
what does the placenta develop from?
Term
leiomyoma (uterine fibroid)
Definition
benign uterine tumor of myometrium
Term
leiomyosarcoma
Definition
rare uterine tumor of the myometrium
Term
endometrial adenocarcinoma
Definition
what is the most common endometrial cancer that accounts for 80% of uterine cancer?
Term
vaginal bleeding and abdominal pain
Definition
what are the side effects of endometrial adenocarcinoma?
Term
a leiomyoma is a smooth muscle tumor (looks like smooth muscle on histological examination) & an endometrial adenocarcinoma is a tumor that histologically looks like endometrial tissue
Definition
what is the difference between a leiomyoma and an endometrial adenocarcinoma?
Term
the cervix (the entrance/exit to the uterus)
Definition
what is found at the proximal end of the vagina?
Term
simple columnar, mucus secreting glands (endocervical glands)
Definition
what lines the endocervical canal?
Term
ectocervix
Definition
what is the transitional zone between the cervix and vagina called?
Term
thick, non-keratinized, stratified squamous epithelium
Definition
what lines the ectocervix?
Term
external os
Definition
cells located at the external opening of the cervix ( _______ ) undergo cyclical changes with the menstrual cycle
Term
squamous metaplasia, and occasionally the cells undergo malignant transformation leading to cervical cancer
Definition
what do cyclical changes in the external os cause over time?
Term
carcinoma of the uterine cervix
Definition
second most common malignancy of the female reproductive tract
Term
ages 40-55
Definition
when in life does carcinoma of the uterine cervix usually present?
Term
cervical cancer (this could be due to the Human papilloma virus)
Definition
what disease in this chapter has a higher incidence associated with early, frequent intercourse & multiple partners
Term
squamous cell carcinoma
Definition
85-90% of tumors are what kind?
Term
1)cervical smear (Pap smear from Papanicolaou) or
2) punch biopsy
Definition
how is cervical cancer diagnosed?
Term
glycogen
Definition
what are exfoliated cells rich in, so that they cen be studied by exfoliative cytology, the basis of the pap smear?
Term
dysplasia which leads to carcinoma in situ which can lead to an invasive carcinoma
Definition
what are early changes in the exfoliative cells of the cervix associated with?
Term
carcinoma in situ involves the entire epithelium, invasive carcinoma is when the tumor cells penetrate basement membrane into underlying stroma
Definition
what is the difference between carcinoma in situ and invasive carcinoma?
Term
THERE ARE NONE! it gets lube from the cervix
Definition
name the glands of the vagina
Term
stratified squamous, non-keratinized epithelium
Definition
what epithelium lines the vagina?
Term
cervical mucus glands
Definition
what glands lubricate the vagina?
Term
mucus producing vestibular glands
Definition
what glands lubricate the clitoris and external urethral orifice?
Term
clitoris and labia
Definition
name the external genitalia of the female
Term
vulva
Definition
labia minora + labia majora =
Term
at the end of the luteal phase
Definition
at what phase in the menstrual cycle does the uterine mucosa slough off?
Term
around day 14-15
Definition
what day of the menstrual cycle does ovulation occur?
Term
what most mammals do, they go into heat, stimulated by an LH surge at ovulation and their uterus discharges a clear, yellow fluid
Definition
what is an estrous cycle?
Term
anestrous or diestrous
Definition
what are the non-receptive portions of the esterous cycle referred to as?
Term
"something's up there, time to breed."
Definition
what did the male mammal say to the female on her estrous cycle?
Term
follicular phase (proliferative phase)
Definition
during this phase, endometrial stroma thickens and proliferates with increased secretion from uterine glands
Term
estrogen from the developing follicle (until ovulation ~day 14)
Definition
what sustains the follicular phase?
Term
1) menstrual phase - decrease in FSH and LH
2) follicular phase - increase in FSH
3) prolferative phase - estrogen from maturing follicle (supresses LH)
4) luteal phase - LH surge, ovulation, progesterone from CL
Definition
name the phases of the menstrual cycle, and what initiates them
Term
luteal phase
Definition
during which phase of the menstrual cycle does the release of progesteone from the CL after ovulation promote secretion of the endometrial glands and glycogen storage?
Term
LH, lasts 10-12 days
Definition
what facilitates the luteal phase, and how long does it last?
Term
there is a decrease in progesterone which causes menstruation
Definition
if there is no fertilization or implantation, what happens to progesterone?
Term
menstruation
Definition
what marks the fist day of the menstrual cycle?
Term
menstrual phase
Definition
characterized by desquamation, or sloughing of endometrial lining
Term
decrease in FSH and LH, lasts 3-5 days
Definition
what promotes the menstrual phase? how long does it last?
Supporting users have an ad free experience!