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42 Cards in this Set

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Uterus
Womb
serves as part of the pathway of sperm deposited in vagina to reach the uterine tubes
site of implantation
Uterus
The hollow, muscular organ in females that is the site of menstration, implantation, development of the fetus, and labor.
Uterus
(Location)
situated btwn. the urinary bladder and the rectum
Uterus
(size)
ap. 3" long
2" wide
1" thick
Major divisions of the Uterus
Fundus
Body
Cervix
Fundus
a domeshaped portion superior to the uterine tubes
Body
tapering central portion
Cervix
an interior narrow pportion the opens into the vagina
Isthmus
Btwn. the body of the uterus and the cervix
is a contricted region about 1 cm.
Mucosa
Secretory cells of cervix Cervical plug
Cervical mucus at time of ovulation
Cervical mucus
supplements the energy needs of sperm
protect sperm from phagocytes and the gostile environment of the vagina and uterus.
Cervical plug
formed by cervical mucus
physically impedes sperm penetration
Cervical mucus at time of ovulation
is more hospitable to sperm at or near the time of ovulation because it is them less viscous and more alkaline (pH 8.5).
Secretory cells of cervix
produce cervical mucus
Uterine cavity
interior part of the body of the uterus
Cervical canal
interior of the narrow cavity
Internal os
cervical canal opens into the uterine cavity
External os
cervical canal opens into the vagina
Anteflexion
normal position of uterus
Supportive ligaments
Broad
Round
Uterosacral
Broad ligaments
double folds of parietal periteneum
Round ligaments
bands of fibrous conn. tissue btw. layers of broad ligament
Uterosacral ligaments
peritoneal extensions
Basic layers of UTERUS
Endometrium
Myometrium
Perimetrium
Endometrium
inner layer of uterus
highly vascularized
Stratum functionalis
Stratum basalis
Myometrium
middle layer of uterus
3 layers of smooth muscle fibers
Perimetrium
outer layer of the uterus
part of the parietal peritoneum
made of simple squamous & areolar conn. tissue
becomes the broad ligament
Stratum functionalis
functional layer
lines the uterine cavity and sloughs off during menstration as a result of declining levels of progesterone from the ovaries.
Stratum basalis
deeper layer
is permanant and gives rise to new stratum functionalis after each menstration.
Function of the UTERUS
SIte of menstration
Passageway for sperm and secondary oocyte
Site of implantation; development of embryo and fetus
labor
Menstral cycle
a concurrent series of changes in the endometrium of the uterus to prepare it for the arrival and development of a fertilized ovum.
Monarche
the first menses. (menstration)
Menopause
the permanent cessation of menses.
Menopause
(symptoms)
experience hot flashes and heavy sweating, which coincide with burst of GnRH.
headache, hair loss, muscular pains, and mood swings.
bone density decreases
Ovarian cycle
a series of events in the ovaries that occur during and after the maturation of an oocyte.
Know hormones involved in control and endometrial changes
Relationships btwn. menstrual and ovarian cycles?
Hypothalamus and gonadotropin releasing hormone (GnRH)
secreted by the hypothalamus
controls the events of female reproductive cycle
stimulates FSH and LH
Anterior Pituitary
F.S.H.
L.H.
F.S.H.
initiate follicular growth and the secretion of estrogens by the growing ovarian follicles
L.H.
stimulates further development of follicles and their full secretions of corpus luteum
Follicule Stimulating Hormone
F.S.H.
Luteum Hormone
L.H.