Search results
Results From The WOW.Com Content Network
The myometrium is located between the endometrium (the inner layer of the uterine wall) and the serosa or perimetrium (the outer uterine layer).. The inner one-third of the myometrium (termed the junctional or sub-endometrial layer) appears to be derived from the Müllerian duct, while the outer, more predominant layer of the myometrium appears to originate from non-Müllerian tissue and is ...
These arteries meet the myometrial-endometrial junction and lead to straight and endometrial arteries. [1] The endometrium receives blood from endometrial arteries which are also called spiral arteries. Endometrial arteries proliferate rapidly and react to different hormones released.
Asherman's syndrome, also known as intrauterine adhesions, occurs when the basal layer of the endometrium is damaged by instrumentation (e.g., D&C) or infection (e.g., endometrial tuberculosis) resulting in endometrial sclerosis and adhesion formation partially or completely obliterating the uterine cavity.
Uterine glands or endometrial glands are tubular glands, lined by a simple columnar epithelium, found in the functional layer of the endometrium that lines the uterus. Their appearance varies during the menstrual cycle. During the proliferative phase, uterine glands appear long due to estrogen secretion by the ovaries.
The primary reproductive function of the human uterus is to prepare for the implantation of a zygote, a fertilized ovum, and maintenance of pregnancy if implantation occurs. [22] Traveling along the fallopian tube on its way to the uterine cavity, the zygote divides mitotically to become a blastocyst , which ultimately attaches to the uterine ...
The junction zone (JZ), or a small distinct hormone-dependent region at the endometrial-myometrial interface, may be assessed by three-dimensional transvaginal ultrasound (3D TVUS) and MRI. Features of adenomyosis are disruption, thickening, enlargement or invasion of the junctional zone. [ 21 ]
TGIF is a potential repressor of TGF-β pathways in myometrial cells. [33] Aromatase and 17beta-hydroxysteroid dehydrogenase are aberrantly expressed in fibroids, indicating that fibroids can convert circulating androstenedione into estradiol. [34] Similar mechanism of action has been elucidated in endometriosis and other endometrial diseases. [35]
In the event no embryo is implanted, the decidualized endometrial lining is shed or, as is the case with species that follow the estrous cycle, absorbed. [1] In menstruating species , decidualization is spontaneous and occurs as a result of maternal hormones.