Sexual intercourse or coitus or copulation is sexual activity typically involving the insertion and thrusting of the penis into the vagina for sexual pleasure , reproduction , or both. There are different views on what constitutes sexual intercourse or other sexual activity , which can impact on views on sexual health. Various jurisdictions place restrictions on certain sexual acts, such as incest , sexual activity with minors , prostitution , rape , zoophilia , sodomy , premarital and extramarital sex. Religious beliefs also play a role in personal decisions about sexual intercourse or other sexual activity, such as decisions about virginity ,   or legal and public policy matters.
Human sexuality - Wikipedia
Human sexuality is the way people experience and express themselves sexually. Someone's sexual orientation is their pattern of sexual interest in the opposite or same sex. 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, moral , ethical , and religious aspects of life. Interest in sexual activity typically increases when an individual reaches puberty.
Human female sexuality encompasses a broad range of behaviors and processes, including female sexual identity and sexual behavior , the physiological , psychological , social , cultural , political , and spiritual or religious aspects of sexual activity. Various aspects and dimensions of female sexuality, as a part of human sexuality , have also been addressed by principles of ethics , morality , and theology. In almost any historical era and culture, the arts, including literary and visual arts, as well as popular culture, present a substantial portion of a given society's views on human sexuality, which include both implicit covert and explicit overt aspects and manifestations of feminine sexuality and behavior.
Organisms of many species are specialized into male and female varieties, each known as a sex. The gametes produced by an organism define its sex: male organisms produce small gametes e. Individual organisms which produce both male and female gametes are termed hermaphroditic. Physical differences are often associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience. For instance, mate choice and sexual selection can accelerate the evolution of physical differences between the sexes.