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
New study finds 2.5 million basketball injuries to high school athletes in six seasons
Basketball is a popular high school sport in the United...
medicalxpress.com
Cancer patients need anxiety, depression screening
(HealthDay)—It is important to recognize and treat anxiety or depression...
medicalxpress.com
Neuroscientists discover brain circuits involved in emotion
Neuroscientists have discovered a brain pathway that underlies the emotional...
medicalxpress.com
Lower birth weight, less breastfeeding linked to adult inflammation and disease
Individuals born at lower birth weights as well as those...
medicalxpress.com
Abridged food education program for children still helpful
(HealthDay)—An abbreviated version of the Nutrition Detectives Program improves students'...
medicalxpress.com
Low blood sugar may affect heartbeat in people with diabetes
(HealthDay)—Low blood sugar levels—known as hypoglycemia—in people with diabetes may...
medicalxpress.com
Spouse's sunny outlook may be good for your health
(HealthDay)—Marriage vows often include the promise to stick together for...
medicalxpress.com
Considerable sudden death in hypertrophic cardiomyopathy
(HealthDay)—Patients with hypertrophic cardiomyopathy (HC) without traditional risk factors and...
medicalxpress.com
Pre-HPV vaccine, most oropharyngeal cancers HPV+
(HealthDay)—Most oropharyngeal cancers in the United States diagnosed between 1995...
medicalxpress.com
Amgen misses 1Q views as higher costs cut profit
Despite higher sales, biotech drugmaker Amgen's first-quarter profit fell 25...
medicalxpress.com
Biting vs. chewing: Biting into whole foods can make children rowdy
There's a new secret to get your child to behave...
medicalxpress.com
Researchers identify link between fetal growth and risk of stillbirth
Researchers from the University of Texas Medical Branch and the...
medicalxpress.com
Pain curbs sex drive in female mice, but not in males
"Not tonight, dear, I have a headache." Generally speaking, that...
medicalxpress.com
SPARK program helps researchers cross the “valley of death” between drug discovery and development
Several years ago, Stanford neuroscientist Craig Garner, PhD, found himself...
scopeblog.stanford.edu
FDA Panel Snubs Morphine-Oxycodone Combo
(MedPage Today) -- An FDA advisory committee has voted unanimously...
medpagetoday.com
Newly approved brain stimulator offers hope for individuals with uncontrolled epilepsy
A recently FDA-approved device has been shown to reduce seizures...
medicalxpress.com
Stroke Rounds: AVM Outcomes Better With Conservative Tx (CME/CE)
(MedPage Today) -- Patients with unruptured arteriovenous malformations (AVMs) in...
medpagetoday.com
Benzos Equal for Kids With Status Epilepticus (CME/CE)
(MedPage Today) -- Diazepam proved equal to lorazepam for effectiveness...
medpagetoday.com
Single motherhood does not make women unhappy
(Medical Xpress)—Raising a child outside of marriage poses many challenges...
medicalxpress.com
Specialized ambulance improves treatment time for stroke
Using an ambulance that included a computed tomography (CT) scanner,...
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 +