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This Concept Map, created with IHMC CmapTools, has information related to: 31a1. Spermatogenesis, SPERMATOGENESIS subject to Hormonal control, Type A dark are Slow dividers, SPERMATOGENESIS reference Pages 1287 to 1289, Type B are Not self renewing, Type A pale change to Type B, SPERMATOGENESIS affected by Diet,hormones, toxin, radiation, infection, Second meiotic division to become Spermatids (23, 1N), Testicular temperature note Must be 2 to 3 degrees cooler, Spermatogonia (46, 2N) types Type A dark, First meiotic division see Meiosis, 2N germ cells divide into 1N sperm sperm production requires Testosterone, SPERMATOGENESIS start with Spermatogonia (46, 2N), Spermatogonia (46, 2N) live in Basal compartment, Type B become Primary spermatocytes (46, 4N), Spermatids (23, 1N) now they are ready for Spermiogenesis, True bridges stays all the way through Spermiogenesis, Spermatogonia (46, 2N) before puberty Only germ cell, 2N germ cells divide into 1N sperm sperm production requires Prolactin, SPERMATOGENESIS affected by Testicular temperature, 2N germ cells divide into 1N sperm sperm production requires LH