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 spermatozoasperm are called malesexual intercourse wikipedia, while organisms that produce produce larger, non-mobile gametes ovaoften called egg cells are called female.

Sexual intercourse also coitus or copulation is sexual activity involving the insertion and thrusting of the male penis inside the female 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 of 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 , [13] [14] or legal and public policy matters. Religious views on sexuality vary significantly between different religions and sects of the same religion, though there are common themes, such as prohibition of adultery. 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. For most non-human mammals , mating and copulation occur at the point of estrus the most fertile period of time in the female's reproductive cycle , which increases the chances of successful impregnation.

Sexual intercourse wikipedia

Penile vaginal intercourse or vaginal intercourse is a form of sexual intercourse in human sexuality , in which an erect penis is inserted in a vagina. It corresponds to mating or copulation in non-human animals. Some of the synonyms are used for other variants of sexual intercourse as well. The desire for sensual pleasure is usually the main motivation for humans, and sometimes the wish to have a baby or more children. During coitus without condom , sperms enter the vagina, first with the pre-ejaculate and then a larger amount through male ejaculation. Sperm swim through the cervix and the uterus into the fallopian tubes of the woman. If they meet a fertilisable egg cell after or during an ovulation , or if an ovulation occurs hours or days later, one sperm can fertilize it. The resulting zygote develops into the early embryonic stages and, in the meantime, migrates from the fallopian tube into the uterus. The nidation of the embryo called blastocyst at this stage of development with the beginning of the production of hCG marks the beginning of a pregnancy. For people who do not want another child, contraception has made it possible to separate vaginal intercourse from its biological function of procreation.

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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. Two animals coming together for the purposes of sexual reproduction is called mating.

Sexual activities involving men who have sex with men MSM , regardless of their sexual orientation or sexual identity , can include anal sex , non-penetrative sex , and oral sex. Evidence shows that sex between men is significantly underreported in surveys. Various sex positions may be performed during sexual activity between men. Evidence shows that sex between men is significantly underreported in surveys due to social desirability bias. Historically, anal sex has been popularly associated with male homosexuality.

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:Unprotected human sexual intercourse with natural insemination. Commons is a freely licensed media file repository. You can help. Summary Description Unprotected human sexual intercourse with natural insemination.

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In pines and other conifers , the sex organs are produced within cones that have male and female forms. Sexual arousal can also be experienced from foreplay and flirting, and from fetish or BDSM activities, [18] or other erotic activities. Hyatt Dulles Airport, Herndon, Virginia. The females can store sperm indefinitely. Retrieved July 29, These species of fungus are typically isogamous , i. Artificial insemination is a form of assisted reproductive technology , which are methods used to achieve pregnancy by artificial or partially artificial means. The technical term for oral sex is fellatio if performed on a male and cunnilingus if performed on a female. Wikimedia Commons. Female left and male right cones contain the sex organs of pines and other conifers. Works containing such penetrations may be considered pornography. Outline of human sexuality. Medical microbiology 7th ed. Laws may distinguish particular forms of sexual penetration as part of the offense. Columbia University Press.

Human sexual behavior refers to all the ways in which humans experience and live their sexuality.

Wikimedia Commons has media related to Sexual penetrative use of objects. Article Talk. PMC Sexual intercourse or other sexual activity can encompass various sexually stimulating factors physiological stimulation or psychological stimulation , including different sex positions such as the missionary position , the most common human sex position [49] or the use of sex toys. Campbell , Jane B. Susman Categories : Sex Biological processes. Children's Rights. Marc; Vilain, Eric; Epprecht, Marc This sex-determination system results in highly biased sex ratios , as the sex of offspring is determined by fertilization arrhenotoky or pseudo-arrhenotoky resulting in males rather than the assortment of chromosomes during meiosis. They also force the contents of seminal vesicles and the prostate gland into the urethra. There are differences between states in terms of the severity of punishments and what they consider to be a relative, including biological parents, step-parents, adoptive parents and half-siblings.