Quantcast The uterus - Special Surgical Procedures

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
d. The levator ani muscles, varying in thickness and strength, may be divided
into three parts: the iliococcygeal, the pubo-coccygeal, and the puborectal muscles.
The fibers of the levator ani blend with muscle fibers of the rectum and vagina. The
fibers (pubovaginal) of the pubococcygeal part of the levator ani muscles, lying directly
below the urinary bladder, are involved in the control of micturition. The pubococcygeal
fibers of the levator ani control and pull the coccyx forward and assist in the closure of
the pelvic outlet. The fibers pull the rectum, vagina, and bladder neck upward toward
the symphysis in an effort to close the pelvic outlet and are responsible for the flexure at
the anorectal junction. Relaxation of the fibers during defection permits a straightening
at this junction. During parturition, the action of the levator ani directs the fetal head into
the lower part of the passageway.
e. The uterus gains much of its support by its direct attachment to the vagina
and by indirect attachments to nearby structures such as the rectum and pelvic
diaphragm. The ligaments and muscles on each side of the uterus are the broad,
round, cardinal (Mackenrodt), and uterosacral ligaments and the levator ani muscles.
2-3.
THE UTERUS
The uterus, which occupies a central place in the pelvis, is a pear-shaped organ
directed downward and backward. At the upper lateral points, the uterus receives the
uterine tubes (Fallopian tubes). The fundus of the uterus is the upper rounded portion
situated above the level of the tubal openings. The main portion of the uterus is called
the body. Below, the body of the uterus joins the cervix, from which it is separated by a
slightly constricted canal, called the isthmus. The cervix lies at the level of the ischial
spines. The lumen of the body of the uterus communicates with the cervical canal at
the internal orifice, called the internal os. The cervical canal ends at the vaginal
opening of the cervix called the external os. This is a small oval aperture situated
between two lips.
2-4.
THE STRUCTURE OF THE UTERUS (FIGURE 2-3)
a. The Greek word for uterus is hystera. The uterus lies behind the bladder and
in front of the rectum (see figure 2-3). The uterine body has three layers: (1) the outer
peritoneal, or serous layer, which is a reflection of the pelvic peritoneum; (2) the
myometrium, or muscular layer, which houses involuntary muscles, nerves, blood
vessels, and lymphaticus; and (3) the endometrium, or mucosal layer, which lines the
cavity of the uterus.
b. The cervix consists of a supravaginal and a vaginal portion. The supravaginal
portion is closely associated with the bladder and the ureters. The vaginal portion of the
cervix projects downward and backward into the top of the vaginal vault.
MD0928
2-4



Medical News
West Africa seals off Ebola outbreak epicentre
West Africa's Ebola-hit nations announced a cross-border isolation zone on...
medicalxpress.com
New research characterizes in-flight pediatric deaths
In a first-of-its-kind study, researchers at University Hospitals Rainbow Babies...
medicalxpress.com
Medicine X symposium focuses on how patients, providers and entrepreneurs can ignite innovation
A special Medicine X event on Sept. 4 will explore...
scopeblog.stanford.edu
Pepper and halt: Spicy chemical may inhibit gut tumors
Researchers at the University of California, San Diego School of...
medicalxpress.com
Study reveals one reason brain tumors are more common in men
New research at Washington University School of Medicine in St....
medicalxpress.com
Clues to curbing obesity found in neuronal 'sweet spot'
Preventing weight gain, obesity, and ultimately diabetes could be as...
medicalxpress.com
This Week: Lifestyle Medicine, More Ebola Troops
(MedPage Today) -- Another popular guest post on healthy hearts,...
medpagetoday.com
FDA Approves Long-Acting COPD Inhaler
(MedPage Today) -- The FDA approved another once-daily bronchodilator, olodaterol...
medpagetoday.com
Why isn't there a treatment or vaccine for Ebola?
In the four decades since the Ebola virus was first...
medicalxpress.com
Ebola-hit African states seal off outbreak epicentre
Guinea, Liberia and Sierra Leone announced Friday an isolation zone...
medicalxpress.com
Expressive writing may help breast cancer survivors
Writing down fears, emotions and the benefits of a cancer...
medicalxpress.com
Friday Feedback: GME Beyond Repair?
(MedPage Today) -- Do you think medical residents today are...
medpagetoday.com
PodMed: A Medical News Roundup From Johns Hopkins (with audio)
(MedPage Today) -- This week's topics include the benefits of...
medpagetoday.com
Can’t remember being a baby? Rapid growth of new neurons in young brains may explain why
A close friend once told me that one of her...
scopeblog.stanford.edu
Obesity in Women Linked With Early RA
(MedPage Today) -- Women who are overweight or obese, particularly...
medpagetoday.com
Ebola outbreak speeds up efforts to find a vaccine
There is no vaccine on the world market to protect...
medicalxpress.com
STDs on the rise in Miami area
Rates of both chlamydia and syphilis in Miami-Dade have nearly...
medicalxpress.com
Florida officials issue warning on Vibrio bacteria
(HealthDay)—Florida health officials are cautioning visitors to the state's beaches...
medicalxpress.com
Dementia Tied to More ICD Placements
(MedPage Today) -- Dementia patients get more implantable cardioverter-defibrillators than...
medpagetoday.com
More than half of general surgery residents want to quit
(HealthDay)—A majority of categorical general surgery residents seriously consider leaving...
medicalxpress.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +