George Todaro and Howard Green, the scientists who first cultured this cell line, obtained the cells from desegregated NIH Swiss mouse embryo fibroblasts. The cell line has since become a standard fibroblast cell line. NIH3T3 Characteristics As one of the most commonly utilized cell lines, the NIH3T3 cell line has been incorporated in studies for a range of mechanistic and cell based assays, including protein functional analysis.
In most animals sexual motivation is under stricter hormonal control than is the case in humans.
The female of most species is not interested in sexual behaviour until cyclic hormonal changes produce estrus. The male, however, is usually sexually ready but is prevented… Types of behaviour Human sexual behaviour may conveniently be classified according to the number and gender of the participants.
There is solitary behaviour involving only one individual, and there is sociosexual behaviour involving more than one person. Sociosexual behaviour is generally divided into heterosexual behaviour male with female and homosexual behaviour male with male or female with female.
If three or more individuals are involved it is, of course, possible to have heterosexual and homosexual activity simultaneously. In both solitary and sociosexual behaviour there may be activities that are sufficiently unusual to warrant the label deviant behaviour.
The term deviant should not be used as a moral judgment but simply as indicating that such activity is not common in a particular society. Since human societies differ in their sexual practices, what is deviant in one society may be normal in another.
Solitary behaviour Self-masturbation is self-stimulation with the intention of causing sexual arousal and, generally, orgasm sexual climax.
Most masturbation is done in private as an end in itself but is sometimes practiced to facilitate a sociosexual relationship. Masturbation, generally beginning at or before pubertyis very common among males, particularly young males, but becomes less frequent or is abandoned when sociosexual activity is available.
Consequently, masturbation is most frequent among the unmarried. Fewer females masturbate; in the United Statesroughly one-half to two-thirds have done so, as compared to nine out of ten males. Females also tend to reduce or discontinue masturbation when they develop sociosexual relationships.
Neither is there evidence that masturbation is immature behaviour; it is common among adults deprived of sociosexual opportunities. While solitary masturbation does provide pleasure and relief from the tension of sexual excitement, it does not have the same psychological gratification that interaction with another person provides; thus, extremely few people prefer masturbation to sociosexual activity.
The psychological significance of masturbation lies in how the individual regards it. For some, it is laden with guilt; for others, it is a release from tension with no emotional content; and for others it is simply another source of pleasure to be enjoyed for its own sake.
The majority of males and females have fantasies of some sociosexual activity while they masturbate. The fantasy not infrequently involves idealized sexual partners and activities that the individual has not experienced and even might avoid in real life. Orgasm in sleep evidently occurs only in humans.
Its causes are not wholly known. The idea that it results from the pressure of accumulated semen is invalid because not only do nocturnal emissions sometimes occur in males on successive nights, but females experience orgasm in sleep as well.
In some cases orgasm in sleep seems a compensatory phenomenon, occurring during times when the individual has been deprived of or abstains from other sexual activity. Most orgasms during sleep are accompanied by erotic dreams.
A great majority of males experience orgasm in sleep. This almost always begins and is most frequent in adolescence, tending to disappear later in life. Fewer females have orgasm in sleep, and, unlike males, they usually begin having such experience when fully adult.
Orgasm in sleep is generally infrequent, seldom exceeding a dozen times per year for males and three or four times a year for the average female. Most sexual arousal does not lead to sexual activity with another individual. Humans are constantly exposed to sexual stimuli when seeing attractive persons and are subjected to sexual themes in advertising and the mass media.
Response to such visual and other stimuli is strongest in adolescence and early adult life and usually gradually declines with advancing age. There is great variation among individuals in the strength of sex drive and responsiveness, so this necessary exercise of restraint is correspondingly difficult or easy.
Page 1 of 8.Culture (/ ˈ k ʌ l tʃ ər /) is the social behavior and norms found in human yunusemremert.come is considered a central concept in anthropology, encompassing the range of phenomena that are transmitted through social learning in human societies.
Cultural universals are found in all human societies; these include expressive forms like art, music, dance, ritual, religion, and technologies like. Human sexual behaviour: Human sexual behaviour, any activity—solitary, between two persons, or in a group—that induces sexual arousal.
There are two major determinants of human sexual behaviour: the inherited sexual response patterns that have evolved as a means of ensuring reproduction and that are a part of each. Western culture, sometimes equated with Western civilization, Occidental culture, the Western world, Western society, and European civilization, is a term used very broadly to refer to a heritage of social norms, ethical values, traditional customs, belief systems, political systems and specific artifacts and technologies that have some origin or association with Europe.
The Impact of Human Expression on Culture CE – Unit 7 Assignment Kaplan University. Introduction “In minor ways we differ, in major we’re the same.
Winner of the Inaugural Expanded Reason Award: A wide-ranging exploration of the role of childhood experiences in adult morality. Moral development has traditionally been considered a matter of reasoning―of learning and acting in accordance with abstract rules.
It is amazing how the arts can unite people across the globe, no matter where they are from, because they transcend cultural differences and capture something of what it means to be uniquely human.