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A substance that inhibits sexual desire and behavior.


A substance that allegedly arouses sexual desire and increases the capacity for sexual activity.


Surgical removal of the testes.


A neurotransmitter that facilitates sexual arousal and activity

erogenous zones

Areas of the body that are particularly responsive to sexual stimulation.


Impaired hormone production in the testes that results in testosterone defciency.

limbic system

A subcortical brain system composed of several interrelated structures that influences the sexual behavior of humans and other animals.

multiple orgasms

More than one orgasm experienced within a short time period.


Muscle tension


The surgical procedure for removing the testes


A series of muscular contractions of the pelvic floor muscles occurring at the peak of sexual arousal.


A neuropeptide produced in the hypothalamus that influences sexual response and interpersonal attraction.


Certain odors produced by the body that relate to reproductive functions.

plateau phase

Masters and Johnson's term for the second phase of the sexual response cycle, in which muscle tension, heart rate, blood pressure, and vasocongestion increase.

primary erogenous zones

Areas of the body that contain dense concentrations of nerve endings.

refractory period

The period of time following orgasm in the male, during which he cannot experience another orgasm

resolution phase

The fourth phase of the sexual response cycle, as outlined by Masters and Johnson, in which the sexual systems return to their nonexcited state.

secondary erogenous zones

Areas of the body that have become erotically sensitive through learning and experience.

sex flush

A pink or red rash that can appear on the chest or breasts during sexual arousal.

steroid hormones

The sex hormones and the hormones of the adrenal cortex.

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