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This Concept Map, created with IHMC CmapTools, has information related to: 31a. Testes, Secretory includes Endocrine -Inhibin stops FSH -Anti Mullerian hormone embryo stops female repro tract, Interstitial tissue find -Fenestrated Capillaries -Lymphatic capillaries -Involved in cancer, Interstitial tissue find Leydig cells -Stimulus = LH (pars distalis) at puberty -Don't divide in adults, Sertoli cells -Mesoderm -Columnar cells -Most numerous before puberty -Oval nucleus with prominent nucleolus functions Phagocytic -Digest residual bodies sloughed off cytoplasm from sperm development, Sertoli cells -Mesoderm -Columnar cells -Most numerous before puberty -Oval nucleus with prominent nucleolus cell to cell junctions Sertoli-Basal lamina -Hemidesmosomes, Secretory organs produce Sperm, Capsule -Tunical Albuginea -Dense irregular -More obvious than in ovaries see Ovaries, -Mature Primary Spermatocytes -Secondary Spermatocytes (23 2N) -Spermatids (23 1N) see Spermatogenesis, Testosterone produced by Leydig cells -Stimulus = LH (pars distalis) at puberty -Don't divide in adults, Lobules which house Seminiferous tubules -Highly coiled -1 to 4 per lobule -Produce sperm -Stratified epithelium (Seminiferius epithelium), Germ Cells -ENDODERM for production Spermatogenesis, Production of DHT Enzyme: 5 alpha reductase Functions -Development of Primary genitalia -Regulation of prostatic fluid see Prostate gland, Spermatogenesis followed by Spermiogenesis, Tight junctions -Just ZO's -Location is unique (Near bottom corners) establishes Basal compartment -Germ cells undergoing Mitosis -Free exchange of nutrients with blood, Sertoli cells -Mesoderm -Columnar cells -Most numerous before puberty -Oval nucleus with prominent nucleolus cell to cell junctions Sertoli-germ cell -Desosome like junctions (unusual since btw two different germ layers, Germ Cells -ENDODERM junction Sertoli-germ cell -Desosome like junctions (unusual since btw two different germ layers, Sertoli cells -Mesoderm -Columnar cells -Most numerous before puberty -Oval nucleus with prominent nucleolus resistant to -X-Rays -Infection -Malnutrition, Basal compartment -Germ cells undergoing Mitosis -Free exchange of nutrients with blood located before Blood-testis barrier -Physiologic Compartmentalization Allows ABP to be highly concentrated -Immunologic barrier, Secretory includes Exocrine -Testicular fluid (watery) -Androgen Binding Pt (keep testosterone levels high), Testosterone needed for Secondary male sex characteristics