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HLT 200: Human Sexuality Chapter 3


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HLT 200: Human Sexuality Chapter 3

  1. 1. Human Sexuality Chapter 3
  2. 2. Biology, Psychology, And Human Sexual Responding <ul><li>Why do humans become sexually aroused? (p. 76) </li></ul><ul><ul><li>Psychological reasons </li></ul></ul><ul><ul><ul><li>The impulse toward reproduction </li></ul></ul></ul><ul><ul><ul><li>Feeling pleasure </li></ul></ul></ul><ul><ul><ul><li>Giving pleasure </li></ul></ul></ul><ul><ul><ul><li>Expressing feelings of closeness and love </li></ul></ul></ul><ul><ul><ul><li>Relieving stress </li></ul></ul></ul><ul><ul><ul><li>Feeling valued by another person </li></ul></ul></ul><ul><ul><ul><li>Expressing how much another person is vauled </li></ul></ul></ul><ul><ul><ul><li>Feeling more or less dominant or submissive </li></ul></ul></ul><ul><ul><ul><li>And etc. </li></ul></ul></ul>
  3. 3. EPOR Model <ul><li>EPOR model – Masters and Johnson’s approach to explaining the process of human sexual response, encompassing 4 arbitrarily divided phases (p. 77) </li></ul><ul><ul><li>1. excitement </li></ul></ul><ul><ul><li>2. plateau </li></ul></ul><ul><ul><li>3. orgasm </li></ul></ul><ul><ul><li>4. resolution </li></ul></ul><ul><li>Simply put EPOR model explains how our bodies change during sexual stimulation (p. 77) </li></ul><ul><li>It is a seamless process (p.77) </li></ul>
  4. 4. EPOR Model SEE Figures 3.2 and 3.3 <ul><li>Excitement – the first phase , in which the first physical changes of sexual arousal occur (pp. 78-80) </li></ul><ul><ul><li>Early physical responses can occur to any type of pleasurable sexual </li></ul></ul><ul><ul><ul><li>Kissing , Touching, Sexual fantasy and etc. </li></ul></ul></ul><ul><ul><li>What triggers sexual arousing </li></ul></ul><ul><ul><ul><li>Sexual history and Cultural beliefs </li></ul></ul></ul><ul><ul><li>Signs of Excitement </li></ul></ul><ul><ul><ul><li>WOMEN and MEN – breasts, nipples and areolas enlarge slightly </li></ul></ul></ul><ul><ul><ul><li>WOMEN and MEN – Vasocongestion – the swelling of erectile tissues due to increased due to blood flow during sexual arousal causing them to expand and stiffen in both sexes </li></ul></ul></ul><ul><ul><ul><li>WOMEN – vaginal lubrication; clitoris begins to become erect along its full length; shaft of the clitoris increase in size; labia minora swells and may separate from around the opening to the vagina </li></ul></ul></ul><ul><ul><ul><li>WOMEN – internally, the uterus engorges with blood, enlarges, and moves slightly upward and it may exhibit fibrillations; vagina begins to change shape, becoming longer and widening </li></ul></ul></ul><ul><ul><ul><li>MEN – erection of the penis; scrotal skin tightens; testicles begin to rise up toward the underside of the penis; testicles enlarge somewhat </li></ul></ul></ul>
  5. 5. EPOR Model SEE Figures 3.4, 3.4, 3.5 and 3.6 <ul><li>Plateau – the second phase , during which sexual arousal levels off (reaches plateau) and remains at an elevated level of excitement (pp. 80-81) </li></ul><ul><li>Signs of Plateau </li></ul><ul><ul><li>WOMEN and MEN – all erectile tissues are now fully engorged with blood </li></ul></ul><ul><ul><li>WOMEN and MEN – respiration, heart rate, blood pressure, and muscle tension are all at high levels as orgasm approaches </li></ul></ul><ul><ul><li>WOMEN – nipples maintain their erect state, but the areolas continue to become larger </li></ul></ul><ul><ul><li>WOMEN – walls of the outer one-third of the vagina become engorged with blood and thicken, reducing the size of the vaginal opening </li></ul></ul><ul><ul><li>WOMEN – tenting occurs, which is the widening of the inner two-thirds of the vagina during sexual arousal </li></ul></ul><ul><ul><li>WOMEN – clitoris engorge with blood, straightening out along its length </li></ul></ul><ul><ul><li>WOMEN – libia minora deepen in color as they become increasingly engorged with blood </li></ul></ul><ul><ul><ul><li>This is indication that orgasm is approaching </li></ul></ul></ul><ul><ul><li>MEN – penis becomes fully erect; the corona enlarges further; the Cowper’s glands secrete enough pre-ejaculate fluid that is can be seen and felt at the opening of the urethra; scrotal skin is tight; testicles are pulled up </li></ul></ul><ul><ul><ul><li>The testicles pulled up very closely against the body at the underside of the penis is an indication that orgasm is approaching </li></ul></ul></ul>
  6. 6. EPOR Model SEE Figures 3.7 and 3.8 <ul><li>Orgasm – the third stage during which sexual excitement and pleasure reach a climax (pp. 81-82) </li></ul><ul><li>Sings of Orgasm </li></ul><ul><ul><li>WOMEN and MEN – respiration increases dramatically; pulse and blood pressure continue to rise; a loss of control over voluntary muscles; muscles in the pelvic area contract rhythmically; </li></ul></ul><ul><ul><li>WOMEN – anus, uterus, muscles of the pelvic floor, and walls of the outer third of the vagina all contract at interval of 0.8 second during orgasm </li></ul></ul><ul><ul><li>MEN – anus, prostate gland, urethra, and muscles at the base of the penis contract at intervals of 0.8 second during orgasm – ejaculation </li></ul></ul>
  7. 7. EPOR Model SEE Figures 3.11 and 3.12 <ul><li>Resolution – the fourth stage, during which sexual structures return to their unaroused state (p. 88) </li></ul><ul><ul><li>WOMEN and MEN – heart rate, blood pressure, and muscle tension drop quickly </li></ul></ul><ul><ul><li>WOMEN and MEN – usually feel relaxed, warm, content, and sleepy </li></ul></ul><ul><ul><li>WOMEN – blood flows back out of erectile tissue throughout the genitals and breasts so almost everything returns back to the unaroused state </li></ul></ul><ul><ul><ul><li>except the cervix, which widens slightly to facilitate the passage of semen into the uterus </li></ul></ul></ul><ul><ul><ul><ul><li>It narrows again about a half-hour after orgasm </li></ul></ul></ul></ul><ul><ul><li>MEN – blood flows back out of erectile tissue throughout the genitals and the nipple area </li></ul></ul><ul><ul><ul><li>Refractory period – a period of time following orgasm when a person is physically unable to become aroused to additional orgasm </li></ul></ul></ul><ul><ul><ul><ul><li>It may last from a few minutes to 24 hours </li></ul></ul></ul></ul>
  8. 8. Male Ejaculation <ul><li>MEN – ejaculation occurs in 2 stages (pp. 82-83) </li></ul><ul><ul><li>1 st Stage </li></ul></ul><ul><ul><ul><li>Emission is the buildup of sperm and semen in the urethral bulb just prior to being expelled through the urethra </li></ul></ul></ul><ul><ul><ul><li>Ejaculatory inevitability is the sensation produced during the emission phase of ejaculation that expulsion of semen is imminent, reflexive, and cannot be stopped; often referred to as the “point of no return” </li></ul></ul></ul><ul><ul><li>2 nd Stage </li></ul></ul><ul><ul><ul><li>Expulsion is the contraction of pelvic muscles that force semen through the urethra and our of the body through the penis </li></ul></ul></ul><ul><ul><li>Afterglow – the emotional and physical feeling of satisfaction, relaxation, and intimacy that follows the act of making love </li></ul></ul><ul><ul><ul><li>It may be facilitated by an increase in the hormone oxytocin </li></ul></ul></ul>
  9. 9. Female Ejaculation <ul><li>For female ejaculation, 2 questions are asked (p. 86-87) </li></ul><ul><ul><li>1. Do some women truly ejaculate upon orgasm </li></ul></ul><ul><ul><li>2. If so, what does the female ejaculate consist of </li></ul></ul><ul><ul><li>Question 1 </li></ul></ul><ul><ul><ul><li>Beginning in the 1970s, reports began appearing of women who claimed to ejaculate upon orgasm </li></ul></ul></ul><ul><ul><ul><li>Female ejaculation has been the subject of much debate </li></ul></ul></ul><ul><ul><li>Question 2 </li></ul></ul><ul><ul><ul><li>Some claim it’s identical to urine </li></ul></ul></ul><ul><ul><ul><ul><li>If it is urine then the intense muscular activity during orgasm can lead to some slight incontinence in some women </li></ul></ul></ul></ul><ul><ul><ul><li>Some claim it’s more akin to semen </li></ul></ul></ul><ul><ul><ul><ul><li>Some studies have found that it actually resembles male prostatic fluid in chemical composition </li></ul></ul></ul></ul><ul><ul><li>NOTE – not all women ejaculate, and most women who do not do not particularly care about it </li></ul></ul>