Ovary Normal Anatomy and Histology
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| Ovaries derived from ? | * Mesothelium- epithelial lining
.....* Mesenchyme-underlying tissue (basically ovary)
....... * Primordial germ cells
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| Teratomas, arising from all 3 germ layers, can occur where ? | * Can form within the gonads or extragonadally due to abnormal migration during weeks 4-6
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| Surface epithelium in males and females ? | * In females, SE proliferates.... * In males, it regresses and tunica albugenia quickly forms
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| Surface epithelium in females turns in to ? | * Cortical cords increase in size and incorporate germ cells.... * Cords break up into clusters with oogonium surrounded by follicular cells (from surface epithelium)= primordial follicle
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| Forms the female genital ducts ? | * paramesonephric ducts by fusing caudally
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| Differentiation of paramesonephric ducts ? | * develops in to most of the repro system & has serous, endometrial, and mucinous aspects....* Why the Ovaries can get they types of tumors in them is bc even though the Para.Duct makes these three types of tissues, they all come from Coelomic epithelium
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| Ovarian follicles ? | * seen in various sizes and stages.... * supported by stroma
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| Primordial follicles ? | * appear in 3rd mth of development..... * Oocyte in close contact with a single layer squamous follicle cells
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| Primary Follicle ? | * go from squamousal to cuboidal in shape.... * zona pellucida appears..... * follicle cells proliferate and give rise to stratified glanulosa cells
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| Theca folliculi ? | * stromal cells surround oocyte with, Theca interna- internal layer, highly vascularized
and the Theca externa- outter layer, mainly smooth muscle (estrogen production)
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| Secondary follicle ? | * Granulosa cells increase and develop small fluid-filled cavities
..... * Antrum is created and oocyte continues to grow
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| Graafian follicle ? | * Mature secondary follicle.... * Very large antrum, stratum granulosum appears thinner
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| Corpus luteum ? | * After Ovu., graafian follicular walls fold in & the Thecal & granulosa cells reorganize into lg corpus luteum.....* Duration of the scar is up to preg or not(if preg, creates est.)....*Then, Thecal & granulosa cells reorganize into large corpus albicans
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| Can form cysts ? | * Follicles that do not rupture or quickly seal off after rupturing can form cysts
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