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
License plate decals don't seem to curb learner driver crash rates
The use of license plate decals for drivers with learner...
medicalxpress.com
Almost one in three US adults owns at least one gun
Almost one in three US adults owns at least one...
medicalxpress.com
CRISPR marches forward: Stanford scientists optimize use in human blood cells
The CRISPR news just keeps coming. As we’ve described here...
scopeblog.stanford.edu
For Type 2 Diabetes, Where You Live Matters (CME/CE)
(MedPage Today) -- T2D risk based in part on access...
medpagetoday.com
Aging Doctors: Time for Mandatory Competency Testing?
(MedPage Today) -- AMA calls for idea to be explored,...
medpagetoday.com
Poorly Developed Apps are Damaging to Mental Health
(MedPage Today) -- Steven Chan, MD, discusses concerns raised at...
medpagetoday.com
Guns in Hospitals: HealthLeaders Media
(MedPage Today) -- Do nurse to patient staffing ratios matter?...
medpagetoday.com
Top 5 CV Risk Factors Account for 50% of CV Deaths (CME/CE)
(MedPage Today) -- Study emphasizes the importance of primordial prevention...
medpagetoday.com
Supreme Court blocks restrictive Texas abortion-clinic rules
The Supreme Court refused on Monday to allow Texas to...
medicalxpress.com
Understanding why animals are healthy offers path to precision medicine
Researchers at Duke University School of Medicine and Brigham and...
medicalxpress.com
Talk is cheap: New study finds words speak louder than actions
When it comes to the art of persuasion, you can...
medicalxpress.com
Stanford Football team physician shares tips for staying healthy while working out
Last month, more than 750 people gathered on the Stanford...
scopeblog.stanford.edu
More people in Florida sickened by toxin in tropical reef fish than previously reported
Public health records may significantly underestimate the number of people...
medicalxpress.com
Public health surveillance system may underestimate cases of acute hepatitis C infection
A new study suggests that massive underreporting may occur within...
medicalxpress.com
National study finds life-threatening barriers in access to breakthrough drugs
Most states violate federal Medicaid law because they deny coverage...
medicalxpress.com
Pioneering gene therapy takes aim at inherited blindness
Canada's first human gene therapy trial for eyes—the replacement of...
medicalxpress.com
Who takes care of whom? Surprising new evidence
There has been much recent discussion in the press of...
medicalxpress.com
Severe asthma fails to respond to mainstay treatment
The immune response that occurs in patients with severe asthma...
medicalxpress.com
JDR articles explore 3-D printing for oral and dental tissue engineering
Today, the International and American Associations for Dental Research (IADR/AADR)...
medicalxpress.com
After Ebola, understanding health care needs among rural Liberians
As Liberia rebuilds a health care system decimated by the...
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 +