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  2. Sexual differentiation in humans - Wikipedia

    en.wikipedia.org/wiki/Sexual_differentiation_in...

    Male development can only occur when the fetal testis secretes key hormones at a critical period in early gestation. The testes begin to secrete three hormones that influence the male internal and external genitalia: they secrete anti-Müllerian hormone (AMH), testosterone, and dihydrotestosterone (DHT). Anti-Müllerian hormone causes the ...

  3. Androgen replacement therapy - Wikipedia

    en.wikipedia.org/wiki/Androgen_replacement_therapy

    Oil solution: 25–100 mg 1x/4–6 weeks Testosterone isobutyrate a: Femandren M, Folivirin: Aqueous suspension: 25–50 mg 1x/4–6 weeks Mixed testosterone esters: Climacteron a: Oil solution: 150 mg 1x/4–8 weeks Omnadren, Sustanon: Oil solution: 50–100 mg 1x/4–6 weeks Nandrolone decanoate: Deca-Durabolin: Oil solution: 25–50 mg 1x/6 ...

  4. Androgen - Wikipedia

    en.wikipedia.org/wiki/Androgen

    A study using male rats showed that testosterone may block social isolation, which results in hippocampal neurogenesis reaching homeostasis—regulation that keeps internal conditions stable. A Brdu analysis showed that excess testosterone did not increase this blocking effect against social isolation ; that is, the natural circulating levels ...

  5. Dihydrotestosterone - Wikipedia

    en.wikipedia.org/wiki/Dihydrotestosterone

    Dihydrotestosterone (DHT, 5α-dihydrotestosterone, 5α-DHT, androstanolone or stanolone) is an endogenous androgen sex steroid and hormone primarily involved in the growth and repair of the prostate and the penis, as well as the production of sebum and body hair composition.

  6. Testosterone - Wikipedia

    en.wikipedia.org/wiki/Testosterone

    Testosterone is the primary male sex hormone and androgen in males. [3] In humans, testosterone plays a key role in the development of male reproductive tissues such as testicles and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.

  7. Sex differences in human physiology - Wikipedia

    en.wikipedia.org/wiki/Sex_differences_in_human...

    The gradual growth in sex difference throughout a person's life is a product of various hormones. Testosterone is the major active hormone in male development while estrogen is the dominant female hormone. These hormones are not, however, limited to each sex. Both males and females have both testosterone and estrogen. [107]

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  9. Hypothalamic–pituitary–gonadal axis - Wikipedia

    en.wikipedia.org/wiki/Hypothalamic–pituitary...

    HPG regulation in males, with the inhibin/activin system playing a similar role on GnRH-producing cells. The hypothalamus is located in the brain and secretes GnRH. [1] GnRH travels down the anterior portion of the pituitary via the hypophyseal portal system and binds to receptors on the secretory cells of the adenohypophysis. [2]