Flashcards in Womens Health-cervix, uterus Deck (151)
Where is the uterus located?
Between the urinary bladder anterior to the rectum posteriorly
How long and thich is the uterus?
About 8 cm long, 5 cm across and 4 cm thick
What are the three main parts of the uterus?
Fundus, body and cervix
What is the portioVagninalis?
Is the portion of the cervix that is in the vagina
What are some common positions of the uterus?
Typical, Retroversion, Retroflexed and prolapsed
What are the three layers of the uterus?
o Inner layer- Endometrium
o Middle layer: Myometrium
Outer Layer: Serosa or perimetrium
Which layer is most active and responds to cyclic ovarian hormone change?
What layer is essential to menstruaral and reproductive function?
What layer composed the majority of the uterine volume?
What is the myometrium composed of?
Primarily smooth muscle
What is the Perimetrium composed of?
Epithelial cells that envelope the uterus
What are some of the muellerian abnormalities of the uterus?
o Septate- complete or partial
o Uterus didelphys
o Bicornuate uterus
o Uterus unicornis
What is a Uterus unicornis?
the uterus is formed from one only of the paired Müllerian ducts while the other Müllerian duct does not develop or only in a rudimentary fashion.
What is a Uterus didelphys?
the uterus is present as a paired organ as the embryogenetic fusion of the mullerian ducts failed to occur. As a result there is a double uterus with two separate cervices, and often a double vagina as well. Each uterus has a single horn linked to the ipsilateral fallopian tube that faces its ovary
what is a Septate- complete or partial uterus?
the uterine cavity is partitioned by a longitudinal septum;
what is a Bicornuate uterus?
A bicornuate uterus is a uterus that has two horns and a heart shape. The uterus has a wall inside and a partial split outside.
Anatomy of the Cervix
Anatomy of the Cervix
What does the cervix connect?
The vagina and the uterus
What is the cervix composed of?
Composed of cartilage covered by smooth moist tissue
What is the size of the cervix?
About 1 in across
The shape of the cervical os varies, explain?
o Nulliparous: Small and Circular
o Post partum: Slit like
o Post Menopause: May narrow down to a pin point
What are the two main portions of the cervix?
The Ectocervix and Endocervix
What is the Ectocervix
It extends from the Squamocolumnar junction to the vaginal fornices
What is the extocervix covered in?
Non keratinizing stratified squamous epithelium
Is the Ectocervix Hormone sensitive?
What is the Endocervix (endocervical canal)?
Tunnel though the cervix which extends from the isthmus (internal os to the ectocervical canal)
What is the endocervix covered with?
Lined by mucous secreting columnar epithelium
What is the Squamocolumnar Junction (SCJ)?
The location where the columnar epithelium and the squamous speitheulim meet
When doing a PAP smear it is important to swab what area?
The SCJ because it is an area of transition so high risk of CA