Estrous Cycle
Estrous Cycle - Related Videos
09:05
Rodent Estrous Cycle Monitoring Utilizing Vaginal Lavage: No Such Thing As a Normal Cycle
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Cited by 16 •
2021
This study details the crucial factors to consider in experimental designs involving female rats. In a larger sense, these data serve to decrease stigma and assist in the development of more inclusive diagnostic and intervention tools.
07:07
Lung microRNA Profiling Across the Estrous Cycle in Ozone-exposed Mice
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Cited by 9 •
2019
Here we describe a method to assess lung expression of miRNAs that are predicted to regulate inflammatory genes using mice exposed to ozone or filtered air at different stages of the estrous cycle.
09:01
Performing Vaginal Lavage, Crystal Violet Staining, and Vaginal Cytological Evaluation for Mouse Estrous Cycle Staging Identification
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Cited by 673 •
2012
Here, we describe how to identify the stage of the murine reproductive (proestrus, estrus, metestrus, or diestrus) by simple, non-invasive collection and cytological assessment of vaginal smear samples. We further describe how vaginal cytology reflects circulating hormonal levels underlying transition through the murine reproductive cycle.
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...
FAQs
The hypothalamus releases gonadotropin-releasing hormone, which stimulates the pituitary gland to release follicle-stimulating hormone and luteinizing hormone. These gonadotropins coordinate activity in the ovaries, including follicle development and the events associated with ovulation. This pathway links central endocrine signaling with ovarian changes, making it essential for understanding reproductive timing and fertility.
Changing estrogen and progesterone concentrations help organize several parts of reproductive function rather than acting as isolated signals. They influence follicle development, ovulation, uterine preparation, and behavioral receptivity. Considering their changing levels together allows clinicians and veterinary researchers to relate endocrine conditions to both reproductive tissues and observable reproductive behavior.
Behavioral changes provide an observable component of reproductive regulation. In particular, hormonal changes are associated with receptivity and mating-related behavior, while ovarian events prepare for possible pregnancy. Including behavior alongside endocrine and ovarian findings gives a more complete picture of reproductive status and can support decisions about mating and fertility management.
Recognizing the coordinated reproductive and behavioral changes helps veterinary professionals interpret reproductive timing when making breeding decisions. Hormonal patterns, ovarian activity, uterine preparation, and receptivity can be considered as connected features rather than separate observations. This framework supports fertility management by relating the animal's reproductive state to the possibility of mating and pregnancy.
Animal models provide a framework for examining endocrine regulation in a living reproductive system. Investigators can use this framework to study how hypothalamic, pituitary, and ovarian signals relate to follicle development, ovulation, uterine preparation, and reproductive behavior. The same context supports research into contraception, pregnancy, and broader reproductive medicine questions.
The cycle provides an organized reference for interpreting reproductive disorders because it connects hormone changes with ovarian, uterine, and behavioral outcomes. Researchers can examine whether these aspects remain coordinated or appear disrupted in a reproductive condition. This approach helps place abnormal findings within the wider physiology of fertility, ovulation, mating, and possible pregnancy.