At all over 7 days 7 in utero, the sexual intercourse-connected gene to the Y chromosome initiates the development with the testicles in male infants. The testicles create testosterone.
[86] Married men who interact in bond-maintenance things to do for example paying out the working day with their partner or kid haven't any different testosterone concentrations when compared to times when they don't interact in this kind of actions. Collectively, these outcomes propose the existence of aggressive things to do in lieu of bond-servicing routines is a lot more suitable to modifications in testosterone ranges.[87]
維持性慾及勃起次數（濫用補充劑可能會導致疼痛性陰莖異常勃起、和性慾亢進）
陰莖根（阴茎脚 · 阴茎球 · 襻状韧带 · 悬韧带） · 阴茎体（陰莖海綿體 · 尿道海绵体） · 龟头（包皮 · 包皮繫帶 · 冠狀溝） · 筋膜（阴茎皮下组织 · 布克氏筋膜） · 白膜 · 隔片）
放射免疫测定法：睾酮主要产生于睾丸小叶曲精管之间的间质细胞，此外肾上腺皮质也能合成。当标本中加入H睾酮和睾酮抗体即产生竞争抑制作用，在反应系统中，当H睾酮和其抗体量保持恒定，则标记抗体复合物的形成量受未标记抗原量所制约，用葡聚糖加膜活性炭进行分离，使结合标记抗原与游离标记抗原分开，测定沉淀的结合部分，进行液闪仪计数（dpm）与标准相比，求出未知样品的含量。
If a father's testosterone concentrations minimize in response to hearing their little one cry, it is an indication of empathizing Using the child. This is certainly affiliated with increased nurturing actions and greater outcomes for your toddler.[92]
精原细胞 · 精母细胞发生 · 精母细胞 · 精细胞发生 · 精细胞 · 精子形成 · 精子
虽然雄性激素常被认为仅是男性的性激素，但女性亦会产生雄性激素，只是数量较低，负责性欲与性唤起。雄性激素也是男女体内雌性激素的前体。
過度超量或是長期的使用睪酮，會導致睪丸及男性生殖器萎縮，且導致永久性的陽痿。如果為女性，則會出現乳房萎縮、刺激毛髮過度生長、陰蒂肥大貌似小陰莖和长胡子等種種男性化現象。
There are numerous discrepancies between a male and female Mind that may be resulting from distinct testosterone concentrations, one of them currently being size: the male human brain is, on ordinary, much larger.[38]
睾酮对成人的影响，对男性比较明显，但对男女两性都同样重要。随着年纪渐长，睾酮的分量下降，这些影响亦随之而减少。这些影响包括：[来源请求]
While the extent of paternal treatment may differ between cultures, greater investment decision in immediate youngster care has long been seen to become correlated with reduce common Half Off testosterone amounts and also short term fluctuations.[91] As an example, fluctuation in testosterone amounts when a baby is in distress has long been discovered being indicative of fathering kinds.
[70] This reaction engages penile reflexes (such as erection and ejaculation) that support in sperm Levels of competition when more than one male is present in mating encounters, allowing for for more manufacture of successful sperm and a greater chance of reproduction.
生精小管（精直小管 · 睾丸网 · 输出小管） · 附睾（附件 · 硬纤毛） · 旁睾 · 精索 · 输精管（壶腹） · 射精管