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week 4 notes

by: Michelle Notetaker

week 4 notes PSYC 3070

Michelle Notetaker
Human Sexuality
Pat Nebl

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About this Document

these notes are from week 4. they are about sexual responses and the female orgasm. enjoy!
Human Sexuality
Pat Nebl
Class Notes
25 ?




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This 6 page Class Notes was uploaded by Michelle Notetaker on Wednesday September 16, 2015. The Class Notes belongs to PSYC 3070 at Bowling Green State University taught by Pat Nebl in Summer 2015. Since its upload, it has received 35 views. For similar materials see Human Sexuality in Psychlogy at Bowling Green State University.


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Date Created: 09/16/15
SexualResponse Nuceus Accumbens quotrewa rd center of the brainquot food sex drugs etc all cause dopamine release in this region fMR found increases in activation in this region while participants were viewing pictures of attractive people Medical Preoptic Area od the Hypothalamus one of the hypothalamic subregions Lesions in male rhesus monkeys reduces mating behavior Eectrica stimulation males produced in gonads and adrenal glands saivary T measured with couple on nights they had sex and night they did not nights with sex had higherT Pasma T levels higher during amp immediately after sexual intercourse over control and masturbating T reinstates sexual behavior in hypogonadal men sexua motivation decreases with age along with T chemical castration used to treat someone paraphilics greatly comparing T estrogen and progesterone only T correlated with sexual desire and anticipation of sexual behavior T treatment can be effective in restoring sexual desire to surgically induced ovariectomized females chemica trials with T administration suggests that T enhances libido in postmenopausal women excitement Orgasm pateau resoution phases admittedly arbitrary may scholars have questioned whether this model ts women s sexual response the spongy tissue of the penis corpora cavernosa and corpus spongiosum becomes engorged with blood vasocongestion often doesn t lead to a full erection during this phase increases heart rate can be very quick or last a long time diameter of the penis further increases testices become fully engorged with blood increasing in size from 50100 eevate and rotate Cowper s gland secretes a few drops of clear uid hard to describe or measure the subjective pleasure aspect of orgasm two stages emission rhythmic muscular contractions in vas deferens prostate and seminal vesicles force sperm and prostateseminal uid into ejaculatory ducts contractions of the urethra and muscles at the base of the penis force the semen from the penis ejaculation detumescence loss of erection as blood ow to penis returns to normal decrease in testicale size and movement away from the body cavity if orgasm is not reached there is discomfort not dangerous refractory period not a xed amount of time onger as men age onger after each successive orgasm Greater variation in women s sexual responses other factors might be in play particularly when differentiating physiological amp subjective arousal intimacy needs vaginal wall becomes engorged with blood pressure causes walls to secrete uid wals of vagina balloon out and cervix pull up abia majora atten and move apart citoris becomes engorged with blood two corpora cavernosa and increases in diameter increase heart rate blood pressure and nipple erections outer third of vagina becomes engorged with blood and swells orgasmic platform narrowing of the vaginal opening by 3050 cioris pulls back against the pubic bone and beneath the clitoral hood breasts become engorged with blood and swell 2025 secretion of uids from vaginal walls may slow down after prolonged plateau phase rhythmic contractions of the outer third of the vagina the uterus and the anal sphincter muscles only one stage subjectively males and females describe the experience of an orgasm very similarly physicians and psychologists presented with these descriptions were unable to separate female and male descriptions Diversity in sexual response of this phase may drop below plateau level as was described with males 1416 of women regular have multiple orgasms as many as 40 has experienced multiple orgasms at some point as many as 10 of sexually experienced women have never experienced an orgasm quotdry orgasmquot men are capable of experiencing the psychological aspects of an orgasm Prause Park Leung amp Miller Length 63 inches Circumference 49 Prefer penis size only slightly larger than average Some women have broken up with men due to penis size But ranked about as important as cooking ability source of stimulation Citorus lnner two thirds of the vagina and pubococcygeus muscle Both are physiologically the same identical rhythmic muscular contactions Some women report a subjective difference Front wall of the vagina halfway between back of pubic bone and front of the cervix some research suggests only 10 of women have one but anatomical studies seem to con rm its existence estimated between 1040 of women historicaly seen as urinary incontinence realy uid emitted from Skene s gland ocated in the urethra same embryonic tissue as the prostate uid contains prostatic acid phosphatase an enzyme found in prostate secretions still some question as the nature of the uid Female Orgasm 95 of males report having an orgasm in their most recent sexual encounter only 69 of females report having an orgasm 392 of females report having regular sexual problems Am adaption is an inherited trait that has been selected for because it contributes to the solving of adaptive problem mae orgasm is no evolutionary mystery ejacuation is a necessary component of procreation propelling male gametes into the females reproductive tact so they can fertilize female gametes subjective pleasure of orgasm is accompanied with ejaculation as a reward What is the evolved function of female orgasm A byproduct is a trait that doesn t serve an evolutionary function but exists because its paired with an adaptive trait belly button is a byproduct of the umbilical cord male nipples are a byproduct of female nipples Female orgasm is an adaption which causes more sperm to be retained within the reproductive tract increasing the likelihood of conception Oxytocin is released during orgasm causing the cervix to dip and muscles to contract About 35 of sperm from ejaculation is released from the female shortly after intercourse quot owbackquot if female orgasm is experienced 1 minute before to 45 minutes after the male has ejaculated she released less quot owbackquot female orgasm functions to maximize the likelihood that the female will become impregnated by a mate with good genes maximizing any resultant offspring s likelihood of surviving and thriving initialy explained female nches preference for colorful mates Femaes are more likely to experience orgasm with males who are more physically attractive and symmetrical Femae orgasm functions as a longterm mate selection device for females A male s ability to bring his partner to orgasm may signal his care and concern for the female s needs and desires demonstrating a general willingness commit to and invest in his mate Femae orgasm is highly variable by design with females being differentially orgasmic with different partners Limited tests sefreported orgasm frequency for females is positively correlated with partner income Femae orgasm promotes longterm monogamous relationships and biparental care leads offspring who are more able to survive and thrive Oxytocin is released during orgasm in addition to causing muscular contractions this hormone is also involved in emotional bonding female orgasm functions to signal to her mate that she is satis ed and likely sexually faithful faithfu partner is more likely to be invited in by the mate female orgasm frequency during sexual intercourse positively correlates with sexual satisfaction and overall relationship satisfaction for the female positive correlation between female orgasm frequency and intensity with male investment Still no clear conclusion female orgasm may exist because orgasm in male is adaptive female orgasm may exist because it serves an adaptive function such as retaining more sperm or selecting a mate may be highly variable by design women orgasm most readily while masturbating then via cunnilingus and last readily through penilevaginal intercourse Conservativer estimated 13 of all orgasms by females are faked But why


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