Sex and Hormones Flashcards
In adulthood, sex hormones exert ____ effects to temporarily modify behavior
activating
Behavior can also influence ___ ___
hormone secretion
Hormones do not ___ behavior but rather ___ the activity in various brain areas to change the way the brain responds to certain stimuli
cause; alter
Hormones also change ___ in the penis, vagina and cervix.
sensitivity
Sex hormones facilitate ___ behavior
sexual
___ also depends on previous sexual experience
Arousal
Sex hormones activate sexual behavior by enhancing ___
sensations
Estrogens increase the sensitivity of the ___ ___, which transmits tactile stimulation from the pubic area to the brain
pudendal nerve
Sex hormones also increase responses of certain areas of the hypothalamus:
- ______
- ______
- ______
- The ventromedical nucleus
- the medial preoptic area (MPOA)
- the anterior hypothalamus
Stimulation of an area known as the ___ ___ ___ found in the anterior hypothalamus is ___ in males and increases sexual behavior in males of many species
sexually dimorphic nucleus (SDN); larger
Testosterone and estradiol trigger the release of ___ by the MPOA and other areas
dopamine
Dopamine stimulation of __ and __ receptors is associated with sexual arousal
D1; D5
- Facilitates erection of the penis and sexually receptive postures in females
Higher concentrations of dopamine stimulate ___ receptors and lead to orgasm
D2
___ activity decreases sexual activity by blocking dopamine release
Serotonin
Humans are ___ ___ on current sex hormones than other species but changes can increase or decrease sexual arousal
less dependent