The term man (pl. men) is used for an adult human male (the term boy is the usual term for a human male child or adolescent). However, man is sometimes used to refer to humanity as a whole. Sometimes it is also used to identify a male human, regardless of age, as in phrases such as "men's rights".
The term manhood is used to refer to the various qualities and characteristics attributed to men such as strength and male sexuality.[1]
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Etymology
Main article: Man (word) Symbol of the planet/Roman god Mars, also used to indicate the male sex.The English term "man" is derived from Old English mann. The Old English form had a default meaning of "adult male" (which was the exclusive meaning of "wer"), though it could signify a person of unspecified gender. The closely related "man" was used much as the Modern English "one" (e.g., "one reaps what one sows").[2] The Old English form is derived from Proto-Germanic *mannaz, "persona", which is also the etonym of German Mann "man, husband" and man "one" (pronoun), Old Norse maðr, and Gothic manna. According to Tacitus, the mythological progenitor of the Germanic tribes was called Mannus. The Germanic form is in turn derived from the Proto-Indo-European root *manu-s "man, person", which is also the root of the Indian name Manu, mythological progenitor of the Hindus. Linguists suspect this in turn is connected with a different PIE root, *men-, meaning "to think", which is also the source of English mean, German Minne ("love"), and the Latin words from which English has borrowed mental, mind and remember.[3]
Age and terminology
Main article: VirilityThe term manhood is used to describe the period in a human male's life after he has transitioned from boyhood, having passed through puberty, usually having attained male secondary sexual characteristics, and symbolises a male's coming of age. The word man is used to mean any adult male. In English-speaking countries, many other words can also be used to mean an adult male such as guy, dude, buddy, bloke, fellow, chap and sometimes boy or lad, such as boys' night out. The term manhood is associated with masculinity and virility, which refer to male qualities and male gender roles.
Biology and gender
Main articles: Secondary sexual characteristics and human body Leonardo da Vinci's Vitruvian Man displays the proportions of a man.[4]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. 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.
Some examples of male secondary sexual characteristics in humans, those acquired as boys become men or even later in life, are:
- more pubic hair around penis and under arms
- more facial hair
- larger hands and feet than women
- broader shoulders and chest
- larger skull and bone structure
- greater muscle mass
- a more prominent Adam's apple and deeper voice
- A longer Shinbone.
Sexual characteristics
In mankind, the sex of an individual is generally determined at the time of fertilization by the genetic material carried in the sperm cell. If a sperm cell carrying an X chromosome fertilizes the egg, the offspring will typically be female (XX); if a sperm cell carrying a Y chromosome fertilizes the egg, the offspring will typically be male (XY). Persons whose anatomy or chromosomal makeup differ from this pattern are referred to as intersex.
This is referred to as the XY sex-determination system and is typical of most mammals, but quite a few other sex-determination systems exist, including some that are non-genetic.
The term primary sexual characteristics denotes the kind of gamete the gonad produces: the ovary produces egg cells in the female, and the testis produces sperm cells in the male. The term secondary sexual characteristics denotes all other sexual distinctions that play indirect roles in uniting sperm and eggs. Secondary sexual characteristics include everything from the specialized male and female features of the genital tract, to the brilliant plumage of male birds or facial hair of humans, to behavioral features such as courtship.
Biological factors are not sufficient determinants of whether a person considers themselves a man or is considered a man. Intersex individuals, who have physical and/or genetic features considered to be mixed or atypical for one sex or the other, may use other criteria in making a clear determination. There are also transgender or transsexual men, who were born or physically assigned as female at birth, but identify as men; there are varying social, legal and individual definitions with regard to these issues. (See transman.)
Reproductive system
Human male reproductive anatomy and surroundings.The male sex organs are part of the reproductive system, consisting of the penis, testicles, vas deferens, and the prostate gland. The male reproductive system's function is to produce semen which carries sperm and thus genetic information that can unite with an egg within a woman. Since sperm that enters a woman's uterus and then fallopian tubes goes on to fertilize an egg which develops into a fetus or child, the male reproductive system plays no necessary role during the gestation. The concept of fatherhood and family exists in human societies. The study of male reproduction and associated organs is called andrology.
Karyogram of human male using Giemsa staining. Human males typically possess an XY combination.Sex hormones
In mammals, the hormones that influence sexual differentiation and development are androgens (mainly testosterone), which stimulate later development of the ovary. In the sexually undifferentiated embryo, testosterone stimulates the development of the Wolffian ducts, the penis, and closure of the labioscrotal folds into the scrotum. Another significant hormone in sexual differentiation is the Anti-müllerian hormone, which inhibits development of the Müllerian ducts.
Illnesses
In general, men suffer from many of the same illnesses as women. In comparison to women, men suffer from slightly more illnesses.[citation needed] Male life expectancy is slightly lower than female life expectancy, although the difference has narrowed in recent years.
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.
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Wed, 25 Aug 2010 18:08:47 GMT+00:00
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