Male Internal - SexualAnatomy MaleInternal o...

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Sexual Anatomy o Male-Internal
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Male Internal Sex Organs Female and male sexual organs develop from similar  tissue before birth. Primary Function: Production of semen. ______________________________________________________ _________________ Semen: o Fluid containing sperm and secretions from the prostate  and seminal vesicles (ejaculate). o Teaspoon of semen contains between 200 and 500  million sperm.
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Seminiferous Tubules Thin coiled tubes located in the testicles in which sperm are  produced (Spermatogenesis). Contains 250 cone-shaped lobes. Placed end to end they would span the length of two  football fields Leydig’s Cells ( Interstitial Cells ) Produce Androgens Close proximity to blood vessels allows direct secretion of  androgens into the bloodstream Androgens Hormones that promote the development of  male genitals and secondary sex characteristics.
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