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. Seealso reproductive behaviour; sexuality, human; sexually transmitted disease.
Learn more about sexual intercourse with a free trial on Britannica.com.
The function of long copulation in the wolf spider Pardosa agrestis (Araneae, Lycosidae) investigated in a controlled copulation duration experiment.
May 01, 2005; ABSTRACT. Copulation duration varies greatly in wolf spider species, ranging from a few seconds to several hours. In...