A man is an adult
male
Male (symbol: ♂) is the sex of an organism that produces the gamete (sex cell) known as sperm, which fuses with the larger female gamete, or ovum, in the process of fertilization.
A male organism cannot reproduce sexually without access to ...
human. Prior to adulthood, a male human is referred to as a
boy
A boy is a young male human. The term is commonly used for a child or an adolescent. When a male human reaches adulthood, he is described as a man.
Definition, etymology, and use
According to the ''Merriam-Webster Dictionary'', a boy is ...
(a male
child or
adolescent). Like most other male
mammals, a man's
genome
In the fields of molecular biology and genetics, a genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding g ...
usually inherits an
X chromosome from the mother and a
Y chromosome from the father.
Sex differentiation
Sexual differentiation is the process of development of the sex differences between males and females from an undifferentiated zygote. Sex determination is often distinct from sex differentiation; sex determination is the designation for the dev ...
of the male fetus is governed by the
SRY gene on the Y chromosome. During puberty, hormones which stimulate androgen production result in the development of
secondary sexual characteristic
Secondary sex characteristics are features that appear during puberty in humans, and at sexual maturity in other animals. These characteristics are particularly evident in the sexually dimorphic phenotypic traits that distinguish the sexes of a s ...
s, thus exhibiting greater differences between the sexes. These include greater muscle mass, the growth of facial hair and a lower body fat composition.
Male anatomy is distinguished from female anatomy by the
male reproductive system
The male reproductive system consists of a number of sex organs that play a role in the process of human reproduction. These organs are located on the outside of the body and within the pelvis.
The main male sex organs are the penis and the te ...
, which includes the
penis
A penis (plural ''penises'' or ''penes'' () is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. Such organs occur in many animals, both vertebrate and invertebrate, but males d ...
,
testicle
A testicle or testis (plural testes) is the male reproductive gland or gonad in all bilaterians, including humans. It is homologous to the female ovary. The functions of the testes are to produce both sperm and androgens, primarily testoste ...
s,
sperm duct
The vas deferens or ductus deferens is part of the male reproductive system of many vertebrates. The ducts transport sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation. The vas deferens is a partially coiled tube ...
,
prostate gland
The prostate is both an accessory gland of the male reproductive system and a muscle-driven mechanical switch between urination and ejaculation. It is found only in some mammals. It differs between species anatomically, chemically, and physio ...
and the
epididymis, and by
secondary sex characteristic
Secondary sex characteristics are features that appear during puberty in humans, and at sexual maturity in other animals. These characteristics are particularly evident in the sexually dimorphic phenotypic traits that distinguish the sexes of a s ...
s, including a narrower pelvis, narrower hips, and smaller
breast
The breast is one of two prominences located on the upper ventral region of a primate's torso. Both females and males develop breasts from the same embryological tissues.
In females, it serves as the mammary gland, which produces and sec ...
s without
mammary gland
A mammary gland is an exocrine gland in humans and other mammals that produces milk to feed young offspring. Mammals get their name from the Latin word ''mamma'', "breast". The mammary glands are arranged in organs such as the breasts in pri ...
s.
Throughout
human history
Human history, also called world history, is the narrative of humanity's past. It is understood and studied through anthropology, archaeology, genetics, and linguistics. Since the invention of writing, human history has been studied throug ...
, traditional
gender role
A gender role, also known as a sex role, is a social role encompassing a range of behaviors and attitudes that are generally considered acceptable, appropriate, or desirable for a person based on that person's sex. Gender roles are usually cent ...
s have often defined and limited men's activities and opportunities. Men often face
conscription into military service or are directed into professions with high
mortality rate
Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time. Mortality rate is typically expressed in units of d ...
s, resulting in a
shorter life expectancy than women. Many religious doctrines stipulate certain rules for men, such as
forced circumcision. Men are over-represented as both perpetrators and
victims of violence.
Trans men
A trans man is a man who was assigned female at birth. The label of transgender man is not always interchangeable with that of transsexual man, although the two labels are often used in this way. ''Transgender'' is an umbrella term that inclu ...
have a
gender identity
Gender identity is the personal sense of one's own gender. Gender identity can correlate with a person's assigned sex or can differ from it. In most individuals, the various biological determinants of sex are congruent, and consistent with the ...
that does not align with their female
sex assignment at birth, while
intersex
Intersex people are individuals born with any of several sex characteristics including chromosome patterns, gonads, or genitals that, according to the Office of the United Nations High Commissioner for Human Rights, "do not fit typical bin ...
men may have sex characteristics that do not fit typical notions of male biology.
Etymology
The English term "man" is derived from the
Proto-Indo-European
Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. Its proposed features have been derived by linguistic reconstruction from documented Indo-European languages. No direct record of Proto-Indo- ...
root ''*man-'' (see
Sanskrit
Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late ...
/
Avestan ''manu-'',
Slavic ''mǫž'' "man, male"). More directly, the word derives from
Old English
Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlers in the mid-5th c ...
''
mann''. The Old English form primarily meant "person" or "human being" and referred to men, women, and children alike. The Old English word for "man" as distinct from "woman" or "child" was ''
wer''. ''Mann'' only came to mean "man" in Middle English, replacing ''wer'', which survives today only in the compounds "
werewolf
In folklore, a werewolf (), or occasionally lycanthrope (; ; uk, Вовкулака, Vovkulaka), is an individual that can shapeshift into a wolf (or, especially in modern film, a therianthropic hybrid wolf-like creature), either purposely ...
" (from Old English ''
werwulf'', literally "man-wolf"), and "
wergild
Weregild (also spelled wergild, wergeld (in archaic/historical usage of English), weregeld, etc.), also known as man price (blood money), was a precept in some archaic legal codes whereby a monetary value was established for a person's life, to b ...
", literally "man-payment".
Biology
In humans, sperm cells carry either an
X or a
Y sex chromosome. If a sperm cell carrying a
Y chromosome
The Y chromosome is one of two sex chromosomes (allosomes) in therian mammals, including humans, and many other animals. The other is the X chromosome. Y is normally the sex-determining chromosome in many species, since it is the presence or abse ...
fertilizes the female
ovum, the offspring will have a male karyotype (XY). The
SRY gene is typically found on the Y chromosome and causes the development of the testes, which in turn govern other aspects of
male sex differentiation. Sex differentiation in males proceeds in a testes-dependent way while female differentiation is not gonad dependent.
Primary sex characteristics (or sex organs) are characteristics that are present at birth and are integral to the reproductive process. For men, primary sex characteristics include the
penis
A penis (plural ''penises'' or ''penes'' () is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. Such organs occur in many animals, both vertebrate and invertebrate, but males d ...
and
testicle
A testicle or testis (plural testes) is the male reproductive gland or gonad in all bilaterians, including humans. It is homologous to the female ovary. The functions of the testes are to produce both sperm and androgens, primarily testoste ...
s.
Adult humans exhibit
sexual dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most an ...
in many other characteristics, many of which have no direct link to reproductive ability. Humans are sexually dimorphic in body size, body structure, and body composition. Men tend to be taller and heavier than women, and adjusted for height, men tend to have greater lean and bone mass than women, and lower fat mass.
Secondary sex characteristics are features that appear during
puberty
Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a bo ...
in
human
Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, cultu ...
s.
Such features are especially evident in the
sexually dimorphic
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most ani ...
phenotypic traits that distinguish between the sexes, but—unlike the primary sex characteristics—are not directly part of the
reproductive system
The reproductive system of an organism, also known as the genital system, is the biological system made up of all the anatomical organs involved in sexual reproduction. Many non-living substances such as fluids, hormones, and pheromones are als ...
.
Secondary sexual characteristics that are specific to men include:
* Broadened shoulders;
* Increased body hair;
* An enlarged larynx (also known as an
Adam's apple);
and
* A voice that is significantly deeper than the voice of a child or a woman.
Men weigh more than women.
On average, men are taller than women by about 10%.
On average, men have a larger waist in comparison to their hips (see
waist–hip ratio
The waist–hip ratio or waist-to-hip ratio (WHR) is the dimensionless ratio of the circumference of the waist to that of the hips.
This is calculated as waist measurement divided by hip measurement (). For example, a person with a 30″ ( ...
) than women. In women, the index and ring fingers tend to be either more similar in size or their index finger is slightly longer than their ring finger, whereas men's ring finger tends to be longer.
Reproductive system
The male reproductive system includes external and internal genitalia. The male external genitalia consist of the
penis
A penis (plural ''penises'' or ''penes'' () is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. Such organs occur in many animals, both vertebrate and invertebrate, but males d ...
, the male urethra, and the scrotum, while the male internal genitalia consist of the testes, the prostate, the epididymis, the seminal vesicle, the vas deferens, the ejaculatory duct, and the bulbourethral gland.
The male reproductive system's function is to produce
semen
Semen, also known as seminal fluid, is an organic bodily fluid created to contain spermatozoa. It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals and can fertilize the female ovum. Sem ...
, which carries
sperm and thus
genetic information
A nucleic acid sequence is a succession of bases signified by a series of a set of five different letters that indicate the order of nucleotides forming alleles within a DNA (using GACT) or RNA (GACU) molecule. By convention, sequences are usu ...
that can unite with an egg within a woman. Since sperm that enters a woman's
uterus
The uterus (from Latin ''uterus'', plural ''uteri'') or womb () is the organ in the reproductive system of most female mammals, including humans that accommodates the embryonic and fetal development of one or more embryos until birth. The ...
and then
fallopian tubes goes on to
fertilize an egg which develops into a
fetus
A fetus or foetus (; plural fetuses, feti, foetuses, or foeti) is the unborn offspring that develops from an animal embryo. Following embryonic development the fetal stage of development takes place. In human prenatal development, fetal dev ...
or child, the male reproductive system plays no necessary role during the
gestation. The study of male reproduction and associated organs is called
andrology
Andrology (from grc, ἀνήρ, ''anēr'', genitive , ''andros'', "man"; and , ''-logia'') is a name for the medical specialty that deals with male health, particularly relating to the problems of the male reproductive system and urological p ...
.
Sex hormones
Testosterone stimulates the development of the
Wolffian duct
The mesonephric duct (also known as the Wolffian duct, archinephric duct, Leydig's duct or nephric duct) is a paired organ that forms during the embryonic development of humans and other mammals and gives rise to male reproductive organs.
Stru ...
s, the penis, and closure of the
labioscrotal folds
The labioscrotal swellings (genital swellings or labioscrotal folds) are paired structures in the human embryo that represent the final stage of development of the caudal end of the external genitals before sexual differentiation. In both males a ...
into the scrotum. Another significant hormone in sexual differentiation is the
anti-Müllerian hormone
Anti-Müllerian hormone (AMH), also known as Müllerian-inhibiting hormone (MIH), is a glycoprotein hormone structurally related to inhibin and activin from the transforming growth factor beta superfamily, whose key roles are in growth differen ...
, which inhibits the development of the
Müllerian duct
Paramesonephric ducts (or Müllerian ducts) are paired ducts of the embryo that run down the lateral sides of the genital ridge and terminate at the sinus tubercle in the primitive urogenital sinus. In the female, they will develop to form the fal ...
s. For males during puberty, testosterone, along with
gonadotropin
Gonadotropins are glycoprotein hormones secreted by gonadotropic cells of the anterior pituitary of vertebrates. This family includes the mammalian hormones follicle-stimulating hormone (FSH) and luteinizing hormone (LH), the placental/ chorioni ...
s released by the
pituitary gland
In vertebrate anatomy, the pituitary gland, or hypophysis, is an endocrine gland, about the size of a chickpea and weighing, on average, in humans. It is a protrusion off the bottom of the hypothalamus at the base of the brain. The ...
, stimulates
spermatogenesis.
Health
While a majority of the global health gender disparities is weighted against women, there are situations in which men tend to fare poorer. One such instance is
armed conflicts
War is an intense armed conflict between states, governments, societies, or paramilitary groups such as mercenaries, insurgents, and militias. It is generally characterized by extreme violence, destruction, and mortality, using regul ...
, where men are often the immediate victims. A study of conflicts in 13 countries from 1955 to 2002 found that 81% of all violent
war
War is an intense armed conflict between states, governments, societies, or paramilitary groups such as mercenaries, insurgents, and militias. It is generally characterized by extreme violence, destruction, and mortality, using regular o ...
deaths were male.
Apart from armed conflicts, areas with high incidence of violence, such as regions controlled by
drug cartels
A drug cartel is any criminal organization with the intention of supplying drug trafficking operations. They range from loosely managed agreements among various drug traffickers to formalized commercial enterprises. The term was applied when the l ...
, also see men experiencing higher mortality rates. This stems from social beliefs that associate ideals of
masculinity with aggressive, confrontational behavior.
Lastly, sudden and drastic changes in economic environments and the loss of
social safety net
The social safety net (SSN) consists of non-contributory assistance existing to improve lives of vulnerable families and individuals experiencing poverty and destitution. Examples of SSNs are previously-contributory social pensions, in-kind and fo ...
s, in particular social subsidies and food stamps, have also been linked to higher levels of
alcohol consumption and
psychological stress among men, leading to a spike in male mortality rates. This is because such situations often makes it harder for men to provide for their family, a task that has been long regarded as the "essence of masculinity."
A retrospective analyses of people infected with the common cold found that doctors underrate the symptoms of men, and are more willing to attribute symptoms and illness to women than men. Women live longer than men in all countries, and across all age groups, for which reliable records exist. In the United States, men are less healthy than women across all social classes. Non-white men are especially unhealthy. Men are over-represented in dangerous occupations and represent a majority of on the job deaths. Further, medical doctors provide men with less service, less advice, and spend less time with men than they do with women per medical encounter.
Sexuality and gender
Male sexuality and attraction vary from person to person, and a man's sexual behavior can be affected by many factors, including
evolved predispositions,
personality
Personality is the characteristic sets of behaviors, cognitions, and emotional patterns that are formed from biological and environmental factors, and which change over time. While there is no generally agreed-upon definition of personality, m ...
,
upbringing, and
culture
Culture () is an umbrella term which encompasses the social behavior, institutions, and norms found in human societies, as well as the knowledge, beliefs, arts, laws, customs, capabilities, and habits of the individuals in these groups ...
. While the majority of men are
heterosexual
Heterosexuality is romantic attraction, sexual attraction or sexual behavior between people of the opposite sex or gender. As a sexual orientation, heterosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" ...
, significant minorities are
homosexual or
bisexual.
Trans men
A trans man is a man who was assigned female at birth. The label of transgender man is not always interchangeable with that of transsexual man, although the two labels are often used in this way. ''Transgender'' is an umbrella term that inclu ...
have a male
gender identity
Gender identity is the personal sense of one's own gender. Gender identity can correlate with a person's assigned sex or can differ from it. In most individuals, the various biological determinants of sex are congruent, and consistent with the ...
that does not align with their
female
Female ( symbol: ♀) is the sex of an organism that produces the large non-motile ova (egg cells), the type of gamete (sex cell) that fuses with the male gamete during sexual reproduction.
A female has larger gametes than a male. Females ...
sex assignment at birth and may undergo masculinizing
hormone replacement therapy
Hormone replacement therapy (HRT), also known as menopausal hormone therapy or postmenopausal hormone therapy, is a form of hormone therapy used to treat symptoms associated with female menopause. These symptoms can include hot flashes, vaginal ...
and/or
sex reassignment surgery
Gender-affirming surgery (GAS) is a surgical procedure, or series of procedures, that alters a transgender or transsexual person's physical appearance and sexual characteristics to resemble those associated with their identified gender, and a ...
,
while
intersex
Intersex people are individuals born with any of several sex characteristics including chromosome patterns, gonads, or genitals that, according to the Office of the United Nations High Commissioner for Human Rights, "do not fit typical bin ...
men may have sex characteristics that do not fit typical notions of male biology. A 2016 systemic review estimated that 0.256% of people self-identify as female-to-male transgender.
A 2017 survey of 80,929 Minnesota students found that roughly twice as many female-assigned adolescents self-identified as transgender, compared to adolescents with a male sex assignment.
Social role
Masculinity
Masculinity (also sometimes called ''manhood'' or ''manliness'') is the set of personality traits and attributes associated with boys and men. Although masculinity is
socially constructed
Social constructionism is a theory in sociology, social ontology, and communication theory which proposes that certain ideas about physical reality arise from collaborative consensus, instead of pure observation of said reality. The theory ...
,
some research indicates that some behaviors considered masculine are biologically influenced.
[Social vs biological citations:
*
*
*
*] To what extent masculinity is biologically or socially influenced is subject to debate.
It is
distinct from the definition of the
biological male sex, as both males and females can exhibit masculine traits. Men generally face social stigma for embodying
feminine traits, more so than women do for embodying masculine traits. This can also manifest as
homophobia.
Standards of manliness or masculinity vary across different cultures and historical periods. While the outward signs of masculinity look different in different cultures, there are some common aspects to its definition across cultures. In all cultures in the past, and still among traditional and non-Western cultures, getting married is the most common and definitive distinction between boyhood and manhood.
In the late 20th century, some qualities traditionally associated with marriage (such as the "triple Ps" of ''protecting, providing, and
procreating'') were still considered signs of having achieved manhood.
Relationships
Platonic relationships are not significantly different between men and women, though some differences do exist. Friendships involving men tend to be based more on shared activities than self-disclosure and personal connection. Perceptions of friendship involving men varies among cultures and time periods. In heterosexual romantic relationships, men are typically expected to take a proactive role, initiate the relationship, plan dates, and propose marriage.
Status
Anthropology has shown that masculinity itself has
social status, just like wealth,
race
Race, RACE or "The Race" may refer to:
* Race (biology), an informal taxonomic classification within a species, generally within a sub-species
* Race (human categorization), classification of humans into groups based on physical traits, and/or s ...
and social class. In
Western culture
Leonardo da Vinci's ''Vitruvian Man''. Based on the correlations of ideal Body proportions">human proportions with geometry described by the ancient Roman architect Vitruvius in Book III of his treatise ''De architectura''.
image:Plato Pio-Cle ...
, for example, greater masculinity usually brings greater social status. Many English words such as ''virtue'' and ''virile'' (from the
Indo-European root ''vir'' meaning ''man'') reflect this. In most cultures,
male privilege
Male privilege is the system of advantages or rights that are available to men solely on the basis of their sex. A man's access to these benefits may vary depending on how closely they match their society's ideal masculine norm.
Academic stud ...
allows men more rights and privileges than women. In societies where men are not given special legal privileges, they typically hold more positions of power, and men are seen as being taken more seriously in society. This is associated with a "gender-role strain" in which men face increased societal pressure to conform to gender roles.
Entertainment and media
Media portrayals of men often replicate traditional understanding of masculinity. Men are portrayed more frequently in television than women and most commonly appear as leads in action and drama programming. Men are typically more active in television programming than women and typically hold more power and status. Due to their prominence, men are more likely to be both the objects and instigators of humorous or disparaging content. Fathers are often portrayed in television as either idealized and caring or clumsy and inept. In advertising, men are disproportionately featured in advertisements for alcohol, vehicles, and business products.
Rights
In most societies, men have more legal and cultural rights than women, and misogyny is far more prevalent than misandry in society.
Men typically receive less support after being victims of sexual assault, and rape of males is stigmatized.
Domestic violence against men is similarly stigmatized.
[ ] Opponents of circumcision describe it as a human rights violation. The fathers' rights movement seeks to support separated fathers that do not receive equal rights to care for their children. The men's movement is the response to issues faced by men in Western countries. It includes Pro-feminism, pro-feminist groups such as the men's liberation movement and Antifeminism, anti-feminist groups such as the manosphere and the men's rights movement.
Sex symbol
The Mars symbol (♂) is a common symbol that represents the male sex. The symbol is identical to the planetary symbol of Mars. It was first used to denote sex by Carl Linnaeus in 1751. The symbol is sometimes seen as a stylized representation of the shield and spear of the Roman mythology, Roman god Mars (mythology), Mars. According to Stearn, however, this derivation is "fanciful" and all the historical evidence favours "the conclusion of the French classical scholar Claude de Saumaise" that it is derived from ''θρ'', the contraction of a Greek name for the planet Mars, which is ''Thouros''.
See also
* Woman
* Lists of men
* Men's studies
* Patriarchy
* Sex differences in humans
* Sexism
References
Bibliography
*
Further reading
* Andrew Perchuk, Simon Watney, bell hooks, ''The Masculine Masquerade: Masculinity and Representation'', MIT Press 1995
* Pierre Bourdieu, ''Masculine Domination'', Paperback Edition, Stanford University Press 2001
* Robert W. Connell, ''Masculinities'', Cambridge : Polity Press, 1995
* Warren Farrell, ''The Myth of Male Power'' Berkley Trade, 1993
* Michael Kimmel (ed.), Robert W. Connell (ed.), Jeff Hearn (ed.), ''Handbook of Studies on Men and Masculinities'', Sage Publications 2004
External links
*
*
*
{{Authority control
Male,
Men,