https://wikimd.com/index.php?action=history&feed=atom&title=UterusUterus - Revision history2026-04-22T08:07:10ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.com/index.php?title=Uterus&diff=4966098&oldid=prevPrab at 14:33, 31 August 20232023-08-31T14:33:20Z<p></p>
<p><b>New page</b></p><div>[[File:Gray1167.svg|thumb|right|200px|Cross-section of human uterus.]]<br />
<br />
The '''uterus''', commonly referred to as the '''womb''', is a pivotal component of the [[Human reproductive system|reproductive system]] in the [[female]] [[body]]. It serves as the nurturing ground where a fetus develops over the course of roughly nine months during [[pregnancy]]. Shaped reminiscently of a pear, this [[Organ (anatomy)|organ]] is strategically situated posterior to the [[bladder]] and anterior to the [[rectum]]. In non-pregnant conditions, the uterus weighs around 70 grams. A distinctive feature of the uterus is the [[endometrium]], which is periodically shed resulting in the menstrual flow ([[menstruation]]) in cyclic intervals, averaging 28 days for most women, though this duration can vary individually. Upon fertilization, an egg migrates via the [[fallopian tube]] and finds its anchoring spot in the endometrium.<br />
<br />
== Anatomy ==<br />
Positioned as a core structure within the female reproductive system, the uterus has its existence complemented by the vagina, ovaries, and fallopian tubes.<br />
Breaking down its anatomy, the uterus is demarcated into four main regions:<br />
<br />
* The '''fundus''', which forms the rounded top.<br />
* The central '''body''' of the uterus.<br />
* The '''uterotubal angles''' that seamlessly connect to the fallopian tubes.<br />
* And the base, known as the '''cervix'''.<br />
In terms of layering:<br />
<br />
The outermost layer is named the '''perimetrium''' or alternatively, the serosa.<ref>Another name for the perimetrium is serosa.</ref> This slender lining encapsulates the uterus and primarily consists of epithelial cell tissue.<br />
The robust middle layer, '''myometrium''', constitutes the bulk of the uterine structure.<br />
[[blood vessel]]s play a pivotal role in supplying nutrients to the uterus. While [[Artery|arteries]] like the internal iliac, ovarian, and uterine arteries ensure a steady flow of blood to the uterine layers, [[vein]]s are responsible for the return journey to the heart and lungs.<br />
<br />
An intricate ligamentary system, including the anterior, posterior, lateral, uterosacral, and round [[Ligament|ligaments]], holds the uterus securely in position. Notably, the relative positioning of the uterus can fluctuate depending on the bladder's content.<br />
<br />
Throughout a woman's lifespan, the uterus undergoes various phases. From dormancy during [[childhood]] and senescence, to heightened activity during reproductive years, the uterus is integral for menstruation, fetal development, and childbirth.<br />
<br />
== Tumors ==<br />
Though infrequent, the uterus can be susceptible to [[Cancer|cancers]], the prominent ones being [[endometrial cancer]] and uterine sarcoma. While endometrial cancer arises from the endometrial lining cells, uterine sarcoma, albeit rare, originates from the [[smooth muscle]] cells.<br />
<br />
== Abnormal uterus ==<br />
[[File:Grosse derGebarmutter in den einzelneMonaten derSchwangerschaft.gif|thumb|100px|The uterus undergoes significant enlargement during pregnancy]]<br />
Congenital abnormalities can sometimes result in an atypical uterine structure. Such conditions might be accompanied by anomalies in other organs too.<br />
<br />
== Pregnancy ==<br />
With the onset of [[pregnancy]], the uterus undergoes dramatic transformations. From accommodating the growing fetus to housing the [[placenta]] and amniotic fluid, its volume can expand to hold five to twenty liters. Predominantly, the uterus comprises smooth muscle, the myometrium, which exhibits cellular proliferation during pregnancy. As pregnancy advances, the outer myometrium thickens, while the inner layer becomes comparably thinner, allowing healthcare practitioners to palpate the fetus.<br />
<br />
== Uterine prolapse ==<br />
In certain situations, the uterus can descend, becoming visible through the vagina. This phenomenon, more prevalent in older women, can be attributed to:<br />
<br />
* Aging<br />
* Diminished estrogen post-menopause<br />
* Obesity<br />
* Chronic coughing<br />
* Tumors<br />
* Excessive strain during bowel movements<br />
* Weakened pelvic muscles<br />
== See Also ==<br />
<br />
[[Menstruation]]<br />
[[Pregnancy]]<br />
[[Human reproductive system]]<br />
== References ==<br />
<references /><br />
<br />
[[Category:Anatomy]]<br />
[[Category:Reproductive system]]<br />
==References==<br />
{{reflist}}<br />
{{stub}}<br />
{{Female reproductive system}}<br />
[[Category:Uterus| ]]<br />
[[Category:Organs (anatomy)]]<br />
[[Category:Pelvis]]<br />
[[Category:Mammal female reproductive system]]<br />
[[Category:Human female reproductive system]]<br />
[[Category:Women's health]]</div>Prab