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