5 Simple Techniques For apoteket
5 Simple Techniques For apoteket
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Inside the cytoplasm of goal cells, testosterone or dihydrotestosterone binds to unique androgen receptors, as well as hormone-receptor complexes enter the cell nucleus, where by they modulate protein synthesis by influencing the speed at which certain genes are transcribed (
Ovarian or testicular tumors: Androgen-creating ovarian and testicular tumors can release excessive testosterone.
Testosterone triggers the development on the male inside and external reproductive organs in the course of fetal development.
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Testosterone is actually a steroid within the androstane course containing a ketone plus a hydroxyl team at positions three and seventeen respectively. It really is biosynthesized in various steps from cholesterol and it is transformed during the liver to inactive metabolites.[eight] It exerts its motion through binding to and activation from the androgen receptor.[8] In human beings and many other vertebrates, testosterone is secreted generally from the testicles of males and, into a lesser extent, the ovaries of females.
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。
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In people, testosterone seems more to advertise standing-trying to get and social dominance than just expanding physical aggression.
Even so, when you listen to people use the expression “anabolic steroids” They are really generally referring to artificial (built in a lab) variants of testosterone that are injected into The body.
There are several variations between a male and female brain Which might be on account of various testosterone concentrations, one of them staying dimension: the male human Mind is, on ordinary, larger sized.[38]
睪酮芳構化成雌二醇會對腦及骨這兩個人體重要的組織構成主要的影響。在骨中，雌二醇加速了軟骨成長為骨的過程，使骨端接合及完成生長的程序。在中樞神經中，雌二醇是給予下視丘的主要迴饋訊號，尤其在影響排卵素的分泌。在很多哺乳動物的腦部中，某些性別差異區域在出生前或產期的雄性化，都是受著睪酮所產生的雌二醇影響，決定將來的雄性性行為。
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。
Anabolic results include things like expansion of muscle mass and toughness, amplified bone density and strength, and stimulation of linear development and bone maturation.
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