Uterine tube Ovary Fimbriae of uterine tube Rectouterine pouch Cervix of uterus Rectum Vagina Anus Sagittal view Labium majus Labium minus Vaginal orifice External urethral orifice Urethra Clitoris Vesicouterine pouch Urinary bladder Uterus Female Reproductive System
Infundibulum Fimbriae Ovary Cervix Vagina Ovarian ligament Uterine tube Uterus Broad ligament External os Posterior Uterine tube Tunica albuginea Cortex Medulla Anterior Germinal epithelium Hilum
Suspensory ligament of ovary Primordial follicles Ovarian ligament Primordial follicles Primary oocyte Follicle cells Primordial follicles Primordial follicle • most primitive type of ovarian follicle • primary oocyte and single flattened layer of follicle cells – primary oocyte arrested in first meiotic prophase • 1.5 million present at birth
Suspensory ligament of ovary Primary follicles Ovarian ligament Primary follicle Primary follicle Thecal cells Primary oocyte Granulosa cells Primary follicle forming from maturing mordial follicle • primary oocyte with layers of cuboidal follicular cells – termed granulosa cells • secretes estrogen as matures – stimulates changes in uterine lining • thecal cells on periphery of follicle – help control follicle development – secrete androgens converted to estrogen by granulosa cells
Suspensory ligament of ovary Secondary follicle Ovarian ligament Corona radiata Granulosa cells Antrum Thecal cells Zona pellucida Primary oocyte Secondary follicle Cumulus oophorus Secondary follicle Secondary follicle forming from primary follicle • primary oocyte, many layers granulosa cells • also contain fluid filled space, antrum • serous fluid here increasing as ovulation nears • oocyte forced to one side of follicle • surrounded by cluster of follicle cells, cumulus oophorus • zona pellucida with glycoproteins • corona radiata, innermost layer of cumulus oophorus cells
Suspensory ligament of ovary Ovarian ligament Corona radiata Zona pellucida Ovulated secondary oocyte Vesicular follicle Cumulus oophorus Secondary oocyte Vesicular follicle Antrum Zona pellucida Corona radiata Vesicular follicle formed from secondary follicle • contains secondary oocyte • has completed meiosis I • arrested in metaphase II • with zona pellucida and corona radiata • numerous granulosa cells, fluid-filled antrum • one formed per month
Suspensory ligament of ovary Ovarian ligament Corona radiata Zona pellucida Ovulated secondary oocyte Corpus albicans Corpus albicans Corpus luteum Corpus albicans Developing corpus luteum Corpus luteum Corpus luteum Corpus luteum formed from remnants of follicle • after follicle ruptured and oocyte expelled • secretes sex hormones progesterone and estrogen – stimulate buildup of uterine lining – prepare uterus for possible implantation of fertilized oocyte Corpus albicans formed from gressed corpus luteum • white connective tissue scar • most structures completely resorbed
Oogonia are diploid cells
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