Lecture 1 History of Sexuality Puritan puritanic modesty what absent is pleasure the pleasure principle sex in the puritan world is only sanctioned in he married realm not for pleasure only for procreating sex was always missionary never saw each other naked however husbands would often have prostitutes to have non conditional sex non missionary at this time period they thought women had no libido basically sex for men was dangerous masturbators are the worst thing possible 1 0z of semen is equal to losing 40 oz of blood sex danger to men Dr William Acton women had no interest in sex women should not move during sex could prevent from becoming pregnant victorian times did not want people to think sex was pleasurable and only to procreate Richard von Krafft Ebing psych associated everything bad with sex no one was becoming pregnant with masturbation and thus was a bad thing Sigmund Freud legitimized sex Henry Havelock Ellis anthropologist said masturbation was okay everyone does it universal practice different sexual orientation lesbians didn t exist because women didn t have libido Alfred Kinsey biology professor teaching human sexuality in Indiana researched sexual behaviors of men and women his research was not well received Morgan Hunt replicated study similar findings even when he did his study in 1975 after the Sex Revolution Shere Hite evaluated women sexuality new research bad because of low sample data 3 response rate 1994 data on teen sexual behavior was needed conducted at university of chicago research was not conducted due to embarrassing and sensitive topics Sex in America published with research on adult sexual behavior conservatism ideas expressed in book information not accurate to realistic actions 2 partners per female lifetime 7 per male lifetime most stimulating 1 sex 2 watching partner undress 3 oral sex Amounts of teen pregnancies sex education editdelete US highest followed by UK Canada France Sweden Lecture 2 Female Anatomy Puberty Hypothalamus stimulates release of hormone GnRH gonadotropic hormone then stimulates FSH follicle stimulating hormone and LH Luteinizing Hormone Secondary Sex Characteristics breast development Body hair Menstrual cycle Widening of hips Age of menstruation decreasing due to hormones body fat obesity lack of good nutrition Nerve endings and blood vessels found in female genetalia Prepuce hood of clitoris Attached to labia majora Stimulated during sex by friction to allow for orgasm Hymen purpose rudimentary evolution for protection of vagina Bartholin gland does not lubricate vagina Vagina is lubricated from sweat glands inside walls Function is unknown Perineum space between vagina and anus Rich in nerve endings Vagina Angle of vagina 45 degrees In non aroused state 4 5 inches No depth or no width In aroused state increase length Birth canal Sperm entry for fertilization Menstrual Sex organ Inside mucous membrane Acidic Vaginal fluorine Keeps down bacteria Kills sperm G Spot anterior wall of vagina that theoretically stimulates orgasms Egg embedded into endometrium Fallopian narrow Carries egg from egg along tube Round ligaments 6 hold uterus Lecture 3 Male Reproductive Anatomy Hypothalamus gonadotropic hormone FSH and interstitial cell stimulating hormone to then stimulate the testes to produce androgens major testosterone Secondary Sex Characteristics larynx developing deepening of voice body hair growth of penis and testes development of sperm wet dreams nocturnal emissions Testes optimal sperm production at temperature lower than body temp Cremasteric muscles control muscles of testes In colder weather muscles constrict and raise testes to be closer to body to increase temperature Scrotal sac two testes seminiferous tubules create sperm In between tubules interstitial cells produce hormones Behind Each Testes epididymis store immature sperm Epididymitis aching swollen testicles Vas deferens carries sperm from epididymis to ejaculatory duct Seminal vesicle produces seminal fluid alkaline in nature and contains fructose semen 70 seminal fluid Prostate gland produces fluid 30 prostate gland Sperm 1 makes up semen Corpora cavernosa penis two sections of spongy tissue running along penis Corpus spongiosum one section of spongy tissue running along penis Cryptorchivisn undescended testes Higher rate of testicular cancer Lecture 4 Human Sexual Response Human Sexual Response not very reliant on genetics Turn On s Body parts Nudity Atmospheres Smell Women ovulation 14 days prior to next period Estrus surge of estrogen that propels them to mate Dogs occur 5 6 times year Women 12 times year Vasopressin oxytocin women release this hormone after orgasm Dopamine related to pleasure Prairie voles usually monogamous Produce more vasopressin oxytocin and increased hormone receptors than montane voles in addition to increased dopamine receptors Montane voles sluts polygamous Neglect their offspring 2 species are 97 identical Primary erognenous zone universal genitalia Nipples Rachman pictures associated with sex stimulation Erotica experiment measure amount of blood within penis to determine arousal Women regard vaginal moisture Freud Only individuals with inadequate sex lives fantasized Lecture 5 Human Sexual Response II Kaplan believed all sexual experiences could be categorized as 1 Desire nonphysical stage 2 Excitement 3 Orgasm Stages of Orgasm 1 Excitement 2 Plateau increasing level of sexual tension 3 Orgasm shortest stage sensation of release climax usually moment of ejaculation in males 4 Resolution return to a nonaroused prearoused state Refractory Phase experienced in males not seen in women Men Excitement phase 25 men experience sex flush darkening of skin myotonia muscles tense Nipple erection Penis becomes erect in 2 5 seconds Cremasteric muscles constrict testicles elevate Vas deferens shortens Testicles increase in size vasocongestion engorged in blood Plateau phase Higher blood pressure heart rate Fully erect blood pressure Pre ejaculatory fluid basic alkaline of the Cowper s gland Sex flush peaks Fully elevated testes Larger Orgasm Shortest Everything has peaked Lose volatile muscle control for few seconds 1 Emission Phase prostate fluid seminal vesicle fluid sperm gather together in ejaculatory duct 2 ejaculatory phase busts Resolution Sex flush disappears Gathers muscular control Lose 50 of erection Cremasteric muscles relax Testes descend Return to normal size Women Excitement phase Majority have sex flush Breasts