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Healthy human sexuality

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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 individual's 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 Healthy human sexuality 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, Healthy human sexuality 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 and 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 Healthy human sexuality be modified by the physical and Healthy human sexuality 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 are 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 driven 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, especially biological drives and maturation, and his view that humans are biologically inclined to seek sexual gratification demonstrates the nature side of Healthy human sexuality 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.

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A number of them, including neo-analytic theories, sociobiological theories, social learning theory Healthy human sexuality, social 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 theories 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, incidence of oral sexand attitudes toward homosexuality and masturbationshow little to no observed difference between males and females. Observed Healthy human sexuality 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, [17] heredity, hormonal issues, gender issues, and sexual dysfunction. Males and females are anatomically similar; this extends to Healthy human sexuality 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.

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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 cell bodies that receives input from the limbic system.

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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.

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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 Healthy human sexuality 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 cavernosa. The third, called the corpus spongiosumHealthy human sexuality 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.

The urethra runs through the shaft, providing an exit for sperm and urine. The root consists of the expanded ends of the cavernous bodies, which fan out to form the crura and attach to the pubic bone and the expanded end of the spongy body bulb.

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The 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 Healthy human sexuality are produced. Millions of sperm are produced daily in Healthy human sexuality hundred seminiferous tubules. Cells called the Leydig cells lie between the tubules; these produce hormones called androgens; these consist of testosterone and inhibin.

The testicles are held by the spermatic cord, which is a tubelike Healthy human sexuality containing blood vessels, nerves, the vas deferens, and a muscle that helps to raise and lower the testicles in response to temperature changes and sexual arousal, in which the testicles are drawn closer to the body. Sperm are transported through a four-part duct system. The first part of this system is the epididymis. The testicles converge to form the seminiferous tubulescoiled tubes at the top and back of each testicle.

The second part of the duct system is the vas deferensa muscular tube that begins at the lower end of the epididymis.

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The third part of the duct system is the ejaculatory ducts, which are 1-inch 2. The prostate gland and the seminal vesicles produce seminal fluid that is mixed with sperm to create semen. It Healthy human sexuality of two main zones: The Cowper's glands, or bulbourethral glands, are two pea sized structures beneath the prostate.

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The mons veneris, also known as the Mound of Venusis a soft layer of fatty tissue overlaying the pubic bone. It has many nerve endings and is sensitive to stimulation. The labia minora and labia majora are collectively known as the lips.

The labia majora are two elongated folds of skin extending from the mons to the perineum. Its outer surface becomes covered with hair after puberty. In between the labia majora are the labia minora, two hairless folds of skin that meet above the clitoris to form the clitoral hood, which is highly sensitive to touch. The labia minora become engorged with blood during sexual stimulation, causing them to swell and turn red.

Near the anus, the labia minora merge with the labia majora. The clitoris is developed from the same embryonic Healthy human sexuality as the penis; it or its glans alone consists of as Healthy human sexuality or more in Healthy human sexuality cases nerve endings as the human penis or glans penis, making it extremely sensitive to touch. It is the main source of orgasm in women.

The vaginal opening and the urethral opening are only visible when the labia minora are parted. These opening have many nerve endings that make them sensitive to touch.

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They are surrounded by a ring of sphincter muscles called the bulbocavernosus muscle. Underneath this muscle and on opposite sides of the vaginal opening are the vestibular bulbs, which help the vagina grip the penis by swelling with blood during arousal.

Healthy human sexuality the vaginal opening is the hymena thin membrane that partially covers the opening in many virgins. Rupture Healthy human sexuality the hymen has been historically considered the loss of one's virginity, though by modern standards, loss of virginity is considered to be the first sexual intercourse. The hymen can be ruptured by activities other than sexual intercourse.

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The urethral opening Healthy human sexuality to the bladder with the urethra; it expels urine from the bladder. This is located below the clitoris and above the vaginal opening. The breasts are external organs used for sexual pleasure in some cultures.

Western culture is one of the few in which they are considered erotic. Breasts develop during puberty in response to an increase in estrogen.

Each adult breast consists of 15 to 20 milk-producing mammary glandsirregularly shaped lobes that include alveolar glands and a lactiferous duct leading to the nipple.

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The lobes are separated Healthy human sexuality dense connective tissues that support the Healthy human sexuality and attach them to the tissues on the underlying pectoral muscles. The female internal reproductive organs are the vaginauterusFallopian tubesand ovaries. The vagina is a sheath-like canal that extends from the vulva to the cervix.

It receives the penis during intercourse and serves as a depository for sperm. The vagina is located between the bladder and the rectum.

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The vagina is normally collapsed, but during sexual arousal it opens, lengthens, and produces lubrication to allow the insertion of the penis. The vagina has three layered walls; it is a self-cleaning organ with natural bacteria that suppress the production of yeast. This area may vary in size and location between women; in some it may be absent. Various researchers dispute its structure or existence, or regard it as an extension of the clitoris. Healthy human sexuality


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