Bology of sexual intercourse

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Sexual intercoursealso called coitusor copulationreproductive act in which the male reproductive organ in humans and other higher animals enters the female reproductive tract. If the reproductive act is complete, sperm cells are passed from the male body into the female, in the process fertilizing the female egg and forming a new organism. In some vertebrates, such as fisheggs are laid outside of the body and fertilized externally.

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Sex is biologically determined based on chromosomes, hormones, gonads, internal reproductive anatomy, and external genitalia. In humans, biological sex is determined at birth, typically by doctors, through the observance of five factors:. In humans, sex is typically divided into male, female, or intersex.

Sexual intercoursespecifically coitusis the human form of copulation. The term sexual intercourse refers to a wider range of sexual activities than the term coituswhich only refers to male-female genital sex. See Human sexual behavior for a discussion of the broader sense of sexual intercourse and list of sexual positions for the wide variety of sexual activities that exist.

Sexual intercourse or coitus or copulation is principally the insertion and thrusting of the penis into the vagina for sexual pleasurereproductionor both. There are different views on what constitutes sexual intercourse or other sexual activitywhich can impact on views on sexual health. Various jurisdictions place restrictions on certain sexual acts, such as incestsexual activity with minorsprostitutionrapezoophiliasodomypremarital and extramarital sex.

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Birds do it, bees do it, humans since the dawn of time have done it. But just how much has the act really changed through the millennia and even in past decades? Are humans doing it more?

See more words from the same year. More Definitions for sexual intercourse. See the full definition for sexual intercourse in the English Language Learners Dictionary.

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Although each specific condition can be separately defined in medical terms, clinically there is significant overlap in afflicted patients. The limited available data on female anatomy, physiology, biochemistry and molecular biology of the female sexual response makes this field particularly challenging to clinicians, psychologists and basic science researchers alike. The sexual response cycle consists of desire, arousal, orgasm and resolution both physiologic and psychologic. Desire is the mental state created by external and internal stimuli that induces a need or want to partake in sexual activity.

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EMBO reports 13; doi. Sex is a topic that arouses all kinds of curious reactions from blushing and giggling to indignation. Yet, social mores and embarrassment notwithstanding, sex is crucially important.

Andrew HandleyUpdated August 22, Sex is an innately disgusting thing. That may be one of the reasons arousal actually inhibits feelings of disgust. In a recent study, 90 women were split into three groups: aroused, unaroused, and neutral.

Comments

  • Rory 29 days ago

    he busted a nut inside of her so consider him blessed

  • Isaiah 8 days ago

    All these years? Pretty sure she was born in 1997 lmao vintage picture family

  • Dillon 11 days ago

    I know - I stand corrected! And that doesn't make me a moron!!