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5 Cards in this Set
- Front
- Back
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Seminiferous Tubules
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- Function: production of sperm
- 3 cell types 1. Spermatogonia 2. Sertoli Cells 3. Leydig (interstitial) cells |
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Spermatogonia
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- diploid (2N) cells that undergo meiosis to produce haploid sperm (N)
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Sertoli cells
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- support cells found on the outer portion of tubules
- forms the blood testis barrier - form zonulae occludens (tight junctions) with adjacent sertoli cells near their base |
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Leydig (interstital) cells
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- found between the tubles
- Function: produce testosterone |
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Sertoli Cell Function
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- separate basal from adluminal compartments
- make special environment - Blood - testis barrier - keeps sperm antigens out of blood; keeps anit-sperm abs out of testis - stimulated by FSH to secrete ABP, increase local testosterone concentration - phagocytize shed cytoplasm from developing sperm - secrete fluid, nurish cells |
