At all around week seven in utero, the sexual intercourse-relevant gene within the Y chromosome initiates the event in the testicles in male infants. The testicles create testosterone.肾上腺髓质： 肾上腺素、去甲肾上腺素 － 肾上腺皮质： 醛固酮、皮质醇、脱氢表雄酮This raises the reproductive Physical fitness in
Some athletes and bodybuilders misuse synthetic testosterone (anabolic steroids) by using very high doses of these within an try and Increase performance or modify their Bodily physical appearance.Testosterone might prove for being an effective remedy in female sexual arousal Conditions,[eighty] and is obtainable to be a dermal patch. There is no