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For males during puberty, testosterone, along with gonadotropins released by the pituitary gland, stimulates spermatogenesis, along with the full sexual distinction of a human male from a human female, while women are acted upon by estrogens and progesterones to produce their sexual distinction from the human male.

Sometimes gender scholars will use the phrase "hegemonic masculinity" to distinguish the most dominant form of masculinity from other variants.

Humans exhibit sexual dimorphism in many characteristics, many of which have no direct link to reproductive ability, although most of these characteristics do have a role in sexual attraction.

Most expressions of sexual dimorphism in humans are found in height, weight, and body structure, though there are always examples that do not follow the overall pattern.

This difference in the relative amounts of these sex steroids is largely responsible for the physiological differences that distinguish men from women.

*Manus in Indo-European mythology was the first man, see Mannus, Manu (Hinduism).For example, men tend to be taller than women, but there are many people of both sexes who are in the mid-height range for the species.In mankind, the sex of an individual is generally determined at the time of fertilization by the genetic material carried in the sperm cell.The concept of fatherhood and family exists in human societies.The study of male reproduction and associated organs is called andrology.

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