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Penile-vaginal intercourse or vaginal intercourse is a form of penetrative sexual intercourse in human sexuality, in which an erect penis is inserted into a vagina. [1] Synonyms are: vaginal sex, cohabitation, coitus (Latin: coitus per vaginam), (in elegant colloquial language) intimacy, or (poetic) lovemaking.
The song is a satire of Catholic teachings on reproduction that forbid masturbation and contraception by artificial means. The sketch, called "The Third World", is about a Catholic Yorkshire worker played by Michael Palin, with his wife played by director Terry Jones.
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Neolamprologus pulcher. Mate-guarding is a defensive behavioral trait that occurs in response to sperm competition; males try to prevent other males from approaching the female (and/or vice versa) thus preventing their mate from engaging in further copulations. [2]
Sesuatu yang Indah (Something Beautiful) is a 1976 Indonesian drama film directed and written by Wim Umboh. It stars Yatie Octavia , Sophan Sophiaan , Robby Sugara , WD Mochtar and Marini . [ 1 ]
The prevalence of imposed paternity is difficult to measure. Research for the Centers for Disease Control and Prevention in 2011 found that approximately 10.4% (or an estimated 11.7 million) of men in the United States reported ever having an intimate partner who tried to get pregnant when they did not want to or tried to stop them from using birth control. [6]
Semen quality is a measure of male fertility, a measure of the ability of sperm in semen to accomplish fertilization.Semen quality involves both sperm quantity and quality. Semen quality is a major factor for fertilit
Sperm motility is dependent on several metabolic pathways and regulatory mechanisms. The axonemal bend movement is based on the active sliding of axonemal doublet microtubules by the molecular motor dynein, which is divided into an outer and an inner arm. Outer and inner arm plays different roles in the production and regulation of flagellar motility: the outer arm increase the bea