ANSC 333 � 9:21 notes
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ANSC 333 � 9:21 notes

Course Number: ANSC 333, Spring 2012

College/University: Purdue

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ANSC 333 9/21/11 Cortex of the ovary: Dark blue around follicle basement membrane Outside basement membrane theca cells Inside basement membrane granulosa cells Theca subdivides into theca interna and theca externa Where blood vessels are found the theca region Granulosa types: Corona radiata, cumulus oophorous, mural granulosa Produce Estradiol by the follicle granulosa and theca cells work together 2-cell...

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333 ANSC 9/21/11 Cortex of the ovary: Dark blue around follicle basement membrane Outside basement membrane theca cells Inside basement membrane granulosa cells Theca subdivides into theca interna and theca externa Where blood vessels are found the theca region Granulosa types: Corona radiata, cumulus oophorous, mural granulosa Produce Estradiol by the follicle granulosa and theca cells work together 2-cell 2 gonadotropin model FSH and LH LH ->bind LH receptor on Theca cells->adenylate cyclase activated ->cAMP ->production of testosterone FSH ->FSH receptor on granulosa -> adenylate cyclase activated -> camp produced -> aromatase (converts testosterone into Estradiol) Corpus Luteum (CL) Forms from an ovulated follicle Process is called luteinization Luteil produce cells progesterone ->LH ->LH receptor->adenylate cyclase ->cAMP>protein kinase->progesterone Follicle to CL about 12 hour process First forms corpus hemorrhagicum (bloody!), then CL Bloody because the basement membrane is breaking down, theca cells are breaking apart, forming lots of new blood vessels CL = transient gland/structure only present on the ovary for a 2-3 week period, then regresses (luteolysis), then becomes a corpus albicans (white scar on the ovary) Oviduct: Houses embryo immediately after fertilization. Houses oocyte immediately prior to fertilization. Mucosa Ampulla and isthmus come together at the AI junction (where fertilization takes place) Infundibulum nearest to ovary. Small fingerlike projections on it called fimbria

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