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
History of epidemics informs modern science
As well as telling us more about earlier societies, the...
medicalxpress.com
Moderate alcohol consumption increases attractiveness
Consuming alcohol (equivalent to about a glass of wine) can...
medicalxpress.com
Scientists find gene that inadvertently promotes cancer growth
A protein that scientists at the School of Medicine discovered...
medicalxpress.com
Surgeon discusses problems of 'medicalized' mortality in the US
Author and surgeon Atul Gawande, MD, MPH, described how witnessing...
medicalxpress.com
Easing cancer's effects through focus on relationships
Cancer patients look to oncology specialists for highly skilled treatment....
medicalxpress.com
Earlier detection for men is vital to increase survival rates for male breast cancer
Every week in Australia, three men will be diagnosed with...
medicalxpress.com
'Tip of the iceberg' in concussion treatment
In an attempt to find a better approach to treating...
medicalxpress.com
Patients must not be forced to choose between easier access and continuity of care
RCGP says that reducing waiting times for a GP appointment...
medicalxpress.com
Weight loss surgery can be a safe option for obese children
Weight loss surgery does not stunt the growth of obese...
medicalxpress.com
Research could be life-prolonging for cystic fibrosis patients
Preventing lung infections in childhood could stop later life-threatening infections...
medicalxpress.com
Neurons critical for learning divided into two subpopulations with different functions
Neurobiologists at the Friedrich Miescher Institute for Biomedical Research (FMI)...
medicalxpress.com
Three Filipino health workers infected with MERS in Saudi Arabia
Three Filipinos have contracted Middle East respiratory syndrome while working...
medicalxpress.com
Teenage TV audiences and energy drink advertisements
Researchers at Dartmouth College examined a database of television advertisements...
medicalxpress.com
Make the Diagnosis: Lump on Neck
(MedPage Today) -- This healthy 5 year-old boy presents with...
medpagetoday.com
How drinking behavior changes through the years
In the UK, frequent drinking becomes more common in middle...
medicalxpress.com
Tips for women-entrepreneurs entering the medical technology field
In an article recently published in MedCity News, Kathryn Stecco, MD,...
scopeblog.stanford.edu
Research highlights differences in how young men and women learn about sex and relationships
More young people than ever are getting most of their...
medicalxpress.com
States on edge about the future of health insurance markets
Mixed signals from the Supreme Court have states on edge...
medicalxpress.com
Suicides by US girls and young women continue to climb
The suicide rate for girls and young women in the...
medicalxpress.com
Serious strain of bird flu found in Minnesota turkey flock
Federal officials say a serious strain of bird flu has...
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 +