PSYCH-101 Lecture Notes - Lecture 22: Rape Myth, Hypothalamus, Vasocongestion
30 Oct 2020
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Document Summary
Sexual response cycle four stage cycle experienced during sexual arousal. Plateau phase respiration, heart rate, vasocongestion, and muscle tension continue to build until there is enough muscle tension to trigger orgasm. Orgasm phase males: rhythmic contractions of internal organs and muscle tissue surrounding the urethra project semen, females: rhythmic contractions of the outer third vagina, surrounding muscles, and uterus. Resolution phase physiological arousal decreases rapidly and the genital organs and tissue return to normal condition. Refractory period (male only) period where orgasm is temporarily incapable of occurring. Hypothalamus control pituitary gland, which regulates secretion of hormones called gonadtrophins into bloodstream. Affect rate at which gonads secrete androgens (testosterone) and estrogens (estradiol) Hormones have organizational effects that direct the development of male and female sex characteristics. Hormones have activational effects that stimulate sexual desire and behaviour. Half of men and fifth of women fantasize about sex at least once a day. More sexually active people tend to fantasize more.
