Human sexuality is the way people experience and express themselves sexually. Social aspects deal with the effects of human society on one's sexuality, while spirituality concerns an Sexuality studies wikipedia spiritual connection with others.
Sexuality also affects and is affected by cultural, political, legal, philosophical, moralethicaland religious aspects of life. Interest in sexual activity typically increases when an individual reaches puberty. Some argue that sexuality is determined by geneticswhile others believe it is molded by the environment, or that both of these factors interact to form the individual's sexual orientation.
In the former, one assumes that the features of a person innately correspond to their natural inheritance, exemplified by drives and instincts; the latter refers to the assumption that the features of a person continue to change throughout their development and nurturing, exemplified by ego ideals formative identifications. Evolutionary perspectives on human coupling, reproduction and reproduction strategiesand social learning theory provide further views of sexuality.
Examples of these include Jewish views on sexual pleasure within marriage and some views of other religions on avoidance of sexual pleasures.
Certain characteristics may be innate in humans; these characteristics may be modified by the physical and social environment in which people interact. The sexual drive affects the development of personal identity and social activities. Freud believed sexual drives are instinctive. He was a firm supporter of the nature argument; he said there "Sexuality studies wikipedia" a large number of instincts but they are reduced into two broad groups: Eros the life instinctwhich comprises the self-preserving and erotic instincts, and Thanatos the death instinctwhich comprises instincts invoking aggression, self-destruction, and cruelty.
His instinct theory said humans are Sexuality studies wikipedia from birth by the desire to acquire and enhance bodily pleasures, thus supporting the nature debate.
Freud redefined the term sexuality to make it cover any form of pleasure that can be derived from the human body.
His developmentalist perspective was governed by inner forces, Sexuality studies wikipedia biological drives and maturation, and his view that humans are biologically inclined to seek sexual gratification demonstrates the nature side of the debate. Later, behaviorists would apply this notion in support of the idea that the environment is where one develops one's sexual drives.
Psychological theories exist regarding the development and expression of gender differences in human sexuality. A number of them, including neo-analytic theories, sociobiological theories, social learning theorysocial role theoryand script theoryagree in predicting that men should be more approving of casual sex sex happening outside a stable, committed relationship such as marriage and should also be more promiscuous have a higher number of sexual partners than women.
These Sexuality studies wikipedia are mostly consistent with observed differences in males' and females' attitudes toward casual sex before marriage in the United States; other aspects of human sexuality, such as sexual satisfaction,
Sexuality studies wikipedia of oral sexand attitudes toward homosexuality and masturbationshow little to no observed difference between males and females.
Observed gender differences regarding the number of sexual partners are modest, with males tending to have slightly more than females. They also deal with the influence of biological factors on other aspects of sexuality, such as organic and neurological responses,  heredity, hormonal issues, gender issues, and sexual dysfunction.
Males and females are anatomically similar; this extends to some degree to the development of the reproductive system. As adults, they have different reproductive mechanisms that enable them to perform sexual acts and to reproduce. Men and women react to sexual stimuli in a similar fashion with minor differences. Women have a monthly reproductive cycle, whereas the male sperm production cycle is more continuous.
The hypothalamus is the most important part of the brain for sexual functioning.
This is a small area at the base of the brain consisting of several groups of nerve
Sexuality studies wikipedia bodies that receives input from the limbic system. Studies have shown that within lab animals, destruction of certain areas of the hypothalamus causes the elimination of sexual behavior. The pituitary gland secretes hormones that are produced in the hypothalamus and itself. The four important sexual hormones are oxytocinprolactinfollicle-stimulating hormoneand luteinizing hormone.
Males also have both internal and external genitalia that are responsible for procreation and sexual intercourse.
Production of spermatozoa sperm is also cyclic, but unlike the female ovulation cycle, the sperm production cycle is constantly producing millions of sperm daily. The male genitalia are the penis and the scrotum. The penis provides a passageway for sperm and urine. The penis's internal structures consist of the shaftglansand the root.
The shaft of the penis consists of three cylindrical bodies of spongy tissue filled with blood vessels along its length. Two of these bodies lie side-by-side in the upper portion of the penis called corpora Sexuality studies wikipedia. The third, called the corpus spongiosumis a tube that lies centrally beneath the others and expands at the end to form the tip of the penis glans.
The raised rim at the border of the shaft and glans is called the corona. urethra runs through the shaft, providing an exit for sperm and urine. The root consists of the expanded ends of the "Sexuality studies wikipedia" bodies, which fan out to form the crura and attach to the pubic bone and the expanded end of the spongy body bulb.
"Sexuality studies wikipedia" root is surrounded by two muscles; the bulbocavernosus muscle and the ischiocavernosus musclewhich aid urination and ejaculation. The penis has a foreskin that typically covers the glans; this is sometimes removed by circumcision for medical, religious or cultural reasons. Male internal reproductive structures are the testicles, the duct system, the prostate and seminal vesicles, and the Cowper's gland.
The testicles are the male gonads where sperm and male hormones are produced.