Sexual intercourse wikipedia

Sexual intercourse also coitus or copulation is sexual activity involving the insertion and thrusting of the male penis inside the female vagina for sexual pleasurereproductionor both. There are different views on what constitutes sexual intercourse or other sexual activity, which can impact on views of sexual health. Various jurisdictions place restrictions on certain sexual acts, such as incestsexual activity with minorsprostitutionrapezoophiliasodomypremarital and sexual intercourse wikipedia sex, sexual intercourse wikipedia.

Sex is the trait that determines whether a sexually reproducing organism produces male or female gametes. By convention, organisms that produce smaller, more mobile gametes spermatozoa , sperm are called male , while organisms that produce produce larger, non-mobile gametes ova , often called egg cells are called female. In non-hermaphroditic species, the sex of an individual is determined through one of several biological sex-determination systems. Most mammalian species have the XY sex-determination system , where the male usually carries an X and a Y chromosome XY , and the female usually carries two X chromosomes XX. Other chromosomal sex-determination systems in animals include the ZW system in birds, and the XO system in insects.

Sexual intercourse wikipedia

Human sexual activity , human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality. People engage in a variety of sexual acts, ranging from activities done alone e. Sexual activity usually results in sexual arousal and physiological changes in the aroused person, some of which are pronounced while others are more subtle. Sexual activity may also include conduct and activities which are intended to arouse the sexual interest of another or enhance the sex life of another, such as strategies to find or attract partners courtship and display behaviour , or personal interactions between individuals for instance, foreplay or BDSM. Sexual activity may follow sexual arousal. Human sexual activity has sociological, cognitive, emotional , behavioural and biological aspects. It involves personal bonding , sharing emotions, the physiology of the reproductive system , sex drive , sexual intercourse, and sexual behaviour in all its forms. In some cultures, sexual activity is considered acceptable only within marriage , while premarital and extramarital sex are taboo. Some sexual activities are illegal either universally or in some countries or subnational jurisdictions, while some are considered contrary to the norms of certain societies or cultures. Two examples that are criminal offences in most jurisdictions are sexual assault and sexual activity with a person below the local age of consent.

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Sexual intercourse or simply called sex is the insertion and thrusting of a male's penis into a female's vagina. Sometimes sexual intercourse is called coitus , copulation , mating , or fornication , and is more casually known as having sex or sleeping together. The two animals may be of opposite sexes or they may be hermaphroditic , as is the case with snails. Humans sometimes engage in behaviors that do not include the penetration of sexual organs , such as oral intercourse or anal intercourse or by non-sexual organs fingering , fisting. These behaviors are sometimes included in the definition of sexual intercourse.

Sexual arousal is the feeling humans and animals get when they are ready to have sexual intercourse. Someone who can only get sexually aroused after forming an emotional bond with someone is called a demisexual. Animal sexuality is not very well understood today, but scientists are sure that animals do get sexually aroused without having sexual intercourse. Dolphins and Bonobos both use sex as a "social tool to strengthen and maintain bonds. Sexual arousal arousal of sexual desire, during or in anticipation of sexual activity. Archived from the original on Retrieved

Sexual intercourse wikipedia

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file. File:Standing sexual intercourse. Commons is a freely licensed media file repository. You can help. Summary Description Standing sexual intercourse. It begins with the insertion of a man's erect penis into a woman's vagina at , followed by pelvic thrusts, becoming faster, initially to stimulate the vagina as it continues to lengthen and become lubricated. At around the man moves the woman's legs apart from each other to allow for better penetration of the vagina.

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Archived from the original PDF on 10 September Like animals, land plants have specialized male and female gametes. Helmchen, F. Reproductive sexual intercourse between non-human animals is more often called copulation , and sperm may be introduced into the female's reproductive tract in non-vaginal ways among the animals, such as by cloacal copulation. Wikimedia Commons has media related to Sexual intercourse. Regarding oral or anal intercourse, the CDC stated in , "Studies indicate that oral sex is commonly practiced by sexually active male-female and same-gender couples of various ages, including adolescents. Fam Pract Res J. Heterosexuality is the romantic or sexual attraction to the opposite sex. The larger and longer-lived female cones are typically more durable, and contain ovules within them that develop into seeds after fertilization. Though these laws cover both same-sex and opposite-sex sexual activities, they may differ in regard to punishment, and may be more frequently or exclusively enforced on those who engage in same-sex sexual activities. Archived from the original on August 13,

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

Sexual Reproduction in Animals and Plants. Maynard-Smith J In the missionary position such accidents are rare. August Irving B. Retrieved July 28, The term is most commonly used in statute law in the context of proscribing certain sexual activities. Current Science. Retrieved August 9, In humans, sexual intercourse and sexual activity in general have been reported as having health benefits as varied as increased immunity by increasing the body's production of antibodies and subsequent lower blood pressure , [] [] and decreased risk of prostate cancer.