Uterine Cycle
Uterine Cycle - Related Videos
08:02
Mouse Model of Surgically-induced Endometriosis by Auto-transplantation of Uterine Tissue
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Cited by 62 •
2012
A description of the surgical induction of endometriosis in mice and rats by auto-transplantation of uterine tissue to the arterial cascade of the intestinal mesentery.
01:16
Uterine Tubes
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2024
The uterine or fallopian tubes function as the conduit through which oocytes travel from the ovaries to the uterus. Each fallopian tube measures approximately 10 to 13 cm long and is anatomically divided into the infundibulum, ampulla, isthmus, and interstitial part (or intramural segment). The infundibulum is characterized by its funnel shape and features extensions called fimbriae which reach towards the peritoneal cavity. These fimbriae play a critical role during ovulation as they extend...
00:54
What are Biogeochemical Cycles?
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2019
The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles. Biogeochemical Cycles and Decomposition The matter that makes up living organisms, like water, carbon, nitrogen, sulfur and phosphorous, exist in limited quantities within the...
01:00
The Water Cycle
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2019
The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living processes, the cycling of water is extremely important to ecosystem dynamics. The water cycle begins as the sun warms surface water on the land and in oceans, causing it to evaporate and enter the atmosphere as vapor. The water vapor condenses into clouds and eventually falls as precipitation in the form of rain, snow or hail. After falling back to the...
05:21
Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri
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2025
Here, we introduce a novel approach-Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri. A laparoscopic extracorporeal knot-pusher is used to perform cervical cerclage, achieving complete occlusion of uterine arteries. Thereafter, the corpus uteri are excised to enhance visibility and facilitate the operative field.
FAQs
Fluctuations in estrogen and progesterone coordinate several tissue-level changes rather than producing a single uniform response. The endometrium first undergoes proliferation, then glandular maturation and vascular remodeling as ovarian activity changes. These transformations create a tissue environment that can support implantation, showing how endocrine signals regulate uterine structure during reproductive cycles.
The three uterine phases reflect different hormonal conditions generated by changing ovarian activity. Their sequence provides a framework for relating endometrial growth, maturation, and shedding to events in the ovaries. This correspondence helps biologists interpret uterine changes as part of an integrated reproductive system rather than as isolated processes within the uterus.
When fertilization does not occur, ovarian hormone levels decline. The endometrium then loses the hormonal support associated with its maintained, prepared state, and its functional layer is shed as menstruation. This transition marks the end of one cycle phase and provides the starting point for renewed endometrial changes in the next cycle.
The cycle shows how the uterus becomes prepared for possible implantation through coordinated endometrial proliferation, glandular maturation, and vascular remodeling. Comparing these changes with ovarian hormone fluctuations helps researchers understand reproductive timing and function. The same framework supports biological study of why appropriate uterine preparation is important for reproductive outcomes.
Knowledge of the uterine cycle connects hormonal fluctuations with changes in the endometrium and reproductive function. This relationship provides biological context for studying contraception, particularly when examining how reproductive processes are influenced or prevented. Understanding the normal sequence of endometrial changes establishes a reference point for interpreting altered hormonal or uterine states.
The cycle supplies a biological framework for examining when endometrial growth, maturation, remodeling, or shedding diverges from expected patterns. Its relevance to endometriosis and abnormal uterine bleeding comes from linking symptoms and disease study to normal reproductive tissue changes. This comparison can help organize research into menstrual health and uterine dysfunction.