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  2. Hypothalamic–pituitary–gonadal axis - Wikipedia

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

    The HPG axis plays a critical part in the development and regulation of a number of the body's systems, such as the reproductive and immune systems. Fluctuations in this axis cause changes in the hormones produced by each gland and have various local and systemic effects on the body. The axis controls development, reproduction, and aging in ...

  3. File:A handjob video.ogv - Wikipedia

    en.wikipedia.org/wiki/File:A_handjob_video.ogv

    English: In this video a female is giving a handjob to a recumbent, bottomless male. Male's (age 35) genitalia are shaved and lubricated, his penis is uncircumcised and erect. The female stimulates male's penis and testicles by hand until the male achieves an orgasm and ejaculates. The biggest squirt of ejaculation ended up on female's face.

  4. File:Sexual intercourse in the woman on top position.webm

    en.wikipedia.org/wiki/File:Sexual_intercourse_in...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  5. Sex differences in human physiology - Wikipedia

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

    The studies often show different results about the body strength difference between the both sexes. Two studies, conducted in the four European Union countries, involving 2,000 participants (1,000 men and 1 000 women) concluded that females are 74 - 92% as strong as males, as many women (211 of 1,000) are still physically stronger than average men.

  6. File:Male Masturbation with Ejaculation Video.webm - Wikipedia

    en.wikipedia.org/wiki/File:Male_Masturbation...

    Male_Masturbation_with_Ejaculation_Video.webm (WebM audio/video file, VP8/Vorbis, length 1 min 15 s, 720 × 480 pixels, 851 kbps overall, file size: 7.6 MB) This is a file from the Wikimedia Commons .

  7. 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 ...

  8. Endocrine system - Wikipedia

    en.wikipedia.org/wiki/Endocrine_system

    Once synthesized, the anti-Müllerian hormone initiates the ipsilateral regression of the Müllerian tract and inhibits the development of female internal features. At 10 weeks of gestation, the Leydig cells begin to produce androgen hormones. The androgen hormone dihydrotestosterone is responsible for the development of the male external ...

  9. 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.