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Ovary Hist/Anat.

Ovary Normal Anatomy and Histology

Ovaries derived from ? * Mesothelium- epithelial lining .....* Mesenchyme-underlying tissue (basically ovary) ....... * Primordial germ cells
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
Surface epithelium in males and females ? * In females, SE proliferates.... * In males, it regresses and tunica albugenia quickly forms
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
Forms the female genital ducts ? * paramesonephric ducts by fusing caudally
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
Ovarian follicles ? * seen in various sizes and stages.... * supported by stroma
Primordial follicles ? * appear in 3rd mth of development..... * Oocyte in close contact with a single layer squamous follicle cells
Primary Follicle ? * go from squamousal to cuboidal in shape.... * zona pellucida appears..... * follicle cells proliferate and give rise to stratified glanulosa cells
Theca folliculi ? * stromal cells surround oocyte with, Theca interna- internal layer, highly vascularized and the Theca externa- outter layer, mainly smooth muscle (estrogen production)
Secondary follicle ? * Granulosa cells increase and develop small fluid-filled cavities ..... * Antrum is created and oocyte continues to grow
Graafian follicle ? * Mature secondary follicle.... * Very large antrum, stratum granulosum appears thinner
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
Can form cysts ? * Follicles that do not rupture or quickly seal off after rupturing can form cysts
Created by: thamrick800