Question | Answer |
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 |