Hormone A substance, secreted by an endocrine gland, that regulates
various body functions
Hypogonadism A condition marked by abnormally low levels of
Sexual Response cycle Master and Johnsons model of sexual response,
which consists of four phases
Excitement phase The first phase of the sexual response cycle, characterized
by erection in the male, vaginal lubrication in the female, and muscle tension
and increased heart rate in both the male and female
Plateau phase The second phase of the sexual response cycle, characterized
by increased vasocongestion, muscle tension, heart rate, and blood pressure,
in preparation for orgasm
Orgasmic Platform Thickening of the walls of the outer one-third of the
vagina (due to vasocongestion) during the plateu phase of sexual response
Sex Flush A reddish rash that appears on the chest or breasts late in the
excitement phase of the sexual response cycle
Sex Skin the reddened skin of the labia minora during the plateau phase.
Orgasmic Phase orgasmis phase in the male consists of two stages of
Contraction of the vas deferens, seminal vesicles, ejaculatory duct, and
prostate glad cause seminal fluid to collect in the urethral bulb at the
base of the penis.
Resolution Phase The fourth phase of the sexual response cycle, during
which the body gradually returns to its pre-aroused state.
Refractory period The time following a response when an individual no
longer responds to stimulation. Multiple Orgasms One or more additional orgasms f