At about 7 days seven in utero, the sex-linked gene within the Y chromosome initiates the development with the testicles in male infants. The testicles make testosterone.

在青春期时，睾酮会令孩童出现第一种雄激素上升可见的现象。这些现象包括：[来源请求]

Testosterone triggers the event of your male internal and exterior reproductive organs all through fetal advancement.

睾酮是经由血液中的性激素结合球蛋白运送至身体的目标组织。男性生殖腺内的塞尔托利氏细胞需要睾酮来生成精子。

It’s not likely — and challenging to explain to — that an Grownup assigned male at start has greater-than-usual levels of testosterone.

雄性激素的生理功能主要包括男性性器官在胚胎中的发育和男性第二性征在青春期时的发育。

testosterone, hormone produced by the male testis which is responsible for growth of your male intercourse organs and masculine characteristics, which include facial hair and deepening from the voice. Testosterone was isolated from testicular extracts in 1935.

The brain is usually influenced by this sexual differentiation;[21] the enzyme aromatase converts testosterone into estradiol that is definitely chargeable for masculinization with the brain in male mice.

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。

Testosterone might also simply exaggerate or amplify current aggression; as an example, chimpanzees who acquire testosterone will increase turn out to be more aggressive to chimps lower than them during the social hierarchy, but will even now be submissive to chimps higher than them. Testosterone Consequently doesn't make the chimpanzee indiscriminately intense, but as an alternative Special Deal amplifies his pre-present aggression towards decreased-ranked chimps.[129]

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]

除自然作用之外，雄性激素亦可作为药物使用，如雄激素替代疗法和促进肌肉生长。值得注意的是，成年男性無論施打多少劑量的雄激素都无助生殖器再次發育成長，反而容易增长生殖疾病风险。

Dihydrotestosterone is chargeable for sperm maturation in the course of spermatogenesis, with the development in the prostate gland and external genitalia, and for sexual maturation at puberty.

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