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sexual intercourse
(redirected from Sexual characteristics)

    Also found in: Medical, Wikipedia 0.03 sec.

sexual intercourse

 or coitus or copulation

Act in which the male reproductive organ enters the female reproductive tract (see reproductive system). Various sexual activities (foreplay) lead to physiological changes that progress to orgasm (climax) and resolution (see sexual response). If it is completed, semen passes from the male into the female's body. If conditions favour fertilization, a sperm joins with an egg, and pregnancy begins (see fertility; reproduction); contraception can prevent this. Intercourse with an unwilling female is rape. See also reproductive behaviour; sexuality, human; sexually transmitted disease.

sexual intercourse
the act carried out for procreation or for pleasure in which the insertion of the male's erect penis into the female's vagina is followed by rhythmic thrusting usually culminating in orgasm; copulation; coitus


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Rarely examined are the sexual characteristics of adolescents that may predict contact with sexual media.
Adolescents' contact with sexuality in mainstream media: a ... by Bakker, Floor / The Journal of Sex Research
The term "androgenic" refers to the effects that these chemicals have on male sexual characteristics.
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Studies in fish, for example, have shown that endocrine disruptors can reduce sperm count, induce both male and female gonadal tissue or intermediate sexual characteristics in the same individual, and induce female-specific proteins in males.
Roe, interrupted: estrogen exposure impairs fish fertility by Spivey, Angela / Environmental Health Perspectives
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