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Exam ReviewChapter 3 (15 questions)1) What’s the four Stages of Sexual Response Cycle (Arousal) and what happens in each stage?Four stages: Arousal: The First Two Stages1) Excitement Phase:The first phase in the EOPR model, in which the first physical changes of sexual arousal occur.-For both sexes, blood begins to circulate into erectile structures throughout the body, causing them to expand throughout the body, causing them to expand and enlarge, in a process called vasocongestion.Women:First obvious sign: Vaginal lubrication. Clitoral glans becomes erect. Nipples become erect; breast enlarge. Vagina increases in length and inner two-thirds of vagina expands.Men:First obvious sign: Erection of penis. (early stage may not achieve erection). Skin of scrotum pulls up toward the body, and testicle rise. Heart rate blood pressure breathing goes up. Time to erection varies with person, age, alcohol or drug use, fatigue, stress, etc.2) Plateau Phase:The second phase in the EPOR model, during which sexual arousal levels off (reaches a plateau) and remains at an elevated level of excitement. Master and Johnson observed that as sexual arousal continued, the increase in excitement responses seemed to level off. Arousal remains very high, while increasing at a slower pace.Women:Outer third of vagina swells, reducing opening by up to 50%. Inner two-thirds of vagina continues to balloon or “tent”. Clitoris retracts towards the body and under hood. Lubrication decreases. Minor lips engorge with blood and darken in color, indicating orgasm is near. Muscle tension and blood pressure increase.Men:Penis is now fully erect, the corona enlarges further, and erection is unlikely to be lost due to anything short of a major distracting event. Testicles are now pulled up against at the underside of the penis. Cowper glands secretes pre-ejaculate fluid. (precum) Muscle tension and blood pressure increase. ____________________________________________________________________Level 8 (in the zone) (in class notes)Men:penis gets red or purple color due to the blood flow.Testes will start to swell and move closer to bodyWomen:Uterus tentingSex skin (vagina): inner and outer lips get much blood flows so it creates red and purpleBreast swelling goes down, nipple may swell up. (nipple erection)Vagina tightens up, and male believe the penis is getting biggerheart rate, blood pressure still high; Spasm as well
3)Orgasm:The third stage in the EPOR model, during which sexual excitement and pleasure reach a climax.Shortest of Master’s and Johnson’s four phases, lasting 15 seconds.Multiple Orgasm:Additional orgasm with continued stimulation without a refractory periodPreorgasmic:Those who never experienced an orgasm in their lifetime (women > men) Enhance biological and psychological health. Typically brings about an immense release of psychological and physical tension, leading to satisfied, warm sensation of emotional well-being, and a sense of bonding with the partner.Female:Begins with rhythmic contractions in pelvic area at intervals of 0.8 seconds, especially in muscles behind the lower vaginal walls. Uterus contracts rhythmically as well. Muscle tension