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Sexual motivation is nature's way of
Making people procreate
Enables our survival
Sexual Response Cycle
The four stars of sexual responding describes by Masters and Johnson—excitement, plateau, orgasm, and resolution.
Excitement Phase
men's and women's genital areas become engorged with blood, a woman's vagina expands and secretes lubricant, and her breasts and nipples may enlarge
Plateau Phase
Breathing, purpose, blood pressure rates continue to increase. Accompanied by vaginal and seminal discharge
Orgasm
Muscle contractions all over body. Increase is breathing, pulse, blood pressure rates.
At orgasm, pulse rate surfers from 70 to
115
During orgasm, a woman's arousal facilitates conception through
Positioning the uterus to receive sperm and drawing the sperm further inward.
Why are men and women's orgasms so similar?
The same subcortical brain regions are active. Responses to partners are also generally similar
Resolution Phase
One of the phases of the sexual response cycle; characterized by the body slowly returning to its unaroused state. Blood in genitals flows out
During resolution phase, men enter the
Refractory Period
Refractory Period
A resting period after orgasm, during which a man cannot achieve another orgasm.
Sexual Dysfunction
A problem that consistently impairs sexual arousal or functioning.
Erectile Disorder
Inability to have or maintain an erection
Premature Ejaculation
a condition in which the male reaches climax too soon, usually before, or shortly after, penetration of the female
Female Orgasmic Disorder
A dysfunction in which a woman persistently fails to reach orgasm, experiences orgasms of very low intensity, or has very delayed orgasms.
Paraphilia
Having sexual arousal to unusual stimuli
The American Psychiatric Association classifies such behavior as disordered if
One is in distress due to their unusual sexual interest
Sexual desire could cause harm to others
What effects do sex hormones have?
Direct physical development of sex characteristics and activate sexual behavior (especially in nonhumans)
Estrogen
Sex hormones, such as estradiol, secreted in greater amounts by females then by males and contributing to female sex characteristics. In nonhuman female mammals, estrogen levels peak during ovulation, promoting sexual receptivity.
Male hormone levels are more
Constant
Testosterone
Most important of the male sex hormones. Both males and females have it, but the additional testosterone in males stimulates the growth of male sex organs in the fetus and the development of the male sex characteristics during puberty.
In humans, hormones more loosely influence
Sexual behavior
If a woman's testosterone level drops
Her sexual interest man wane
If a woman's testosterone level increases
Sexual arousal is rejuvenated
In men, fluctuations in testosterone levels have little
Effect on sexual drive
Sexual arousal is both a _____ and ____ of increased testosterone
Cause and consequence
Sexual Motivation: Biological Influences
Sexual maturity
Sex hormones, especially testosterone
Sexual Motivation: Social-Cultural Influences
Family and society values
Religious and personal values
Cultural expectations
Media
Sexual Motivation: Psychological Influences
Exposure to stimulating conditions
Sexual fantasies
Habituation
With repeated exposure, the emotional response to any erotic stimulus lessens
Our imagination can
Influence our sexual arousal
Which of the following best describes the relationship between gender and orgasm?
Men and women describe orgasm similarly.
About _____ percent of the population experience sexual fantasies.
95
Which of the following is true concerning the effect of sex hormones?
Sex hormones have a more direct effect on nonhuman animals than on humans.
Note 
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