study guide exam 2 (part 4)
study guide exam 2 (part 4) PSYC 2015
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This 1 page Study Guide was uploaded by Jennifer Gittleman on Wednesday October 28, 2015. The Study Guide belongs to PSYC 2015 at George Washington University taught by Dr. Wu in Fall. Since its upload, it has received 42 views. For similar materials see biological psychology in Psychlogy at George Washington University.
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Date Created: 10/28/15
Wolf an Duct precursors to male reproductive organs develop into vas deferens amp seminal vesicles Mullerian Duct precursors to female reproductive organs develop into oviducts uterus amp upper gm m imi mliml SRY gene only found in males gonads in males devel testes gonads in females develop into ovaries Sex amp Hormones androgens more in male estrog39 more in females both are steroid hormones amp exert effects in 3 ways 1 Binding to membrane receptors li neurotransmitters fastest way 2 Entering cells amp activating certain kinds of proteins in cytoplasm 3 Binding to chromosomes where they activateinactivate certain genes Organizing Effects of Sex Hormones occur mostlj sensitive period determine bodybrain39s malefemale characteristics sex hormones in life bind to receptors hypothalamus amygdala and other brain areas prod L13 JDIfL iZi l 135411 li39g anatomical amp physiological differences quotit Activating Effects of Sex Hormones occur at any an a temporarily activate a particular response sex hormo facilitate sexual behavior activate sexual behavior by enhancing sensations L i Modify See Hormonee W 7 7 Behaviors V 7 7 V In adulthood sex hormones exert activating effects to temporarily modify 1 1 Activating Effects of Sex Hormones behavior Behavior can also in uence hormone secretion D napalmmne Hormones do not cause behavior but rather alter the activity in various brain p S Semtmm areas to change the way the brain responds to certain stimuli Hormones also change sensitivity in the penis vagina and cervix Testosterone amp estradiol trigger release of dopamine by the MPOA dopamine stimulation of D1 amp D5 receptors are associated with sexual arousal facilitates erection of penis amp sexually receptive postures in T females higher UthErfE T r concentrations of dopamine stimulate D2 receptors and lead to orgasm serotonin activity decreases sexual activity by blocking dopamine vAlnnI A Testosterone Erection Reception For males levels of testosterone correlate positively with sexual arousal and the drive to seek out partners Men and women with high testosterone levels are more likely than average to seek additional sexual partners even if in a committed relationship Decreases in testosterone levels generally decrease male sexual activity and interest Impotence is the inability to maintain an erection Usuallv caused bv impaired blood circulation not low testosterone FSHLH increased estradiol increase release of FSHLH FSHLH the follicle to release an ovum remnants of the follicle progesterone Oxytocin pituitary hormone important for reproductive behavior stimulates contraction of uterus during birth amp mammary gland to release milk released during orgasm and triggers a state of relaxation facilitates formation of pair bonds bw mating partners and mother and infant Vasopressin associated with establishing longterm bonds in some species facilitates olfactory recognition Gender Identities gender how we identify sexually amp what we call ourselves biological differences sex differences what they were born as Congenital adrenal hyperplasia CAH is an overdevelopment of the adrenal glands from birth caused by a genetic defect in which cortisol production leads to overstimulation of the adrenal gland overstimulation of the adrenal gland leads to extra testosterone production female fetus becomes partly masculinized Sexual Orientation prenatal exposure to stress amp alcohol may play a role stress releases endorphins antagonizes effects of testosterone on the hypothalamus stress elevates adrenal hormone corticosterone decreases testosterone release both
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