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Preoptic nucleus
Preoptic nucleus A group of nerve cells in the anterior or frontal region of the hypothalamus.
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Nerve
Tissue that conveys sensation, temperature, position information to the brain.
Anterior
The front, as opposed to the posterior. The anterior surface of the heart is toward the breast bone (the sternum).
Frontal
In anatomy, pertaining to the forehead. As, for example, the frontal bone, frontal sinus, and frontal nerve.
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Preoptic
Situated anterior to the left/right crossover of the optic nerves at the optic chiasm in the hypothalamic region of the brain, behind the bridge of the nose.
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Praxic
Requiring visuomotor coordination and characterized by action and doing something rather than talking about it [from Greek, praxis, practice, doing something]. ; related to hand-eye coordination in making things and in figuring out the logic of how shapes fit together.
Premature ejaculation
A hypophilic condition or syndrome, variable in etiology, of being unable to sustain the preorgasmic period of sexuoerotic stimulation, so that ejaculation occurs too soon relative to a self-defined, or partner-defined criterion, for example, at the moment of intromission. The partner of the premature ejaculator has the reverse condition of not climaxing soon enough; orgasm recurrently attained too soon before or at the acceptive phase of an erotic/sexual episode.
Premature puberty
Puberty that begins before the normally appointed time and is completed by nine years of age or earlier in girls, and eleven or earlier in boys. It may be an error of timing only, or may be associated with a brain lesion that affects the biological clock of puberty in the brain.
Prenatal masculinization
In embryonic and fetal life, the masculinizing effect on the sexual anatomy and/or the sexual pathways of the brain that is induced by testosterone, estradiol, or other androgenizing sex hormones. The male fetus produces its own androgenic hormones. The female fetus does not need to, produce feminizing hormones in order not to masculinize, as nature's basic design is to differentiate a female. Masculinizing is nor synonymous with defeminizing. Thus some masculinization and some feminization of the brain and behavior may coexist.
Preoptic
Situated anterior to the left/right crossover of the optic nerves at the optic chiasm in the hypothalamic region of the brain, behind the bridge of the nose.
Preoptic nucleus
Phentermine diet
A particular type of diet based on phentermine.
Prepuce
The foreskin of the penis; or the hood of the clitoris.
Priapism
Persistent abnormal and painful erection of the penis, usually without sexual desire. The cause is often unknown. Untreated, it almost always results in destruction of the spongy tissues of the penis as a result of coagulation of blood in them, with resultant irreversible impotence.
Proceptive phase
In a sexuoerotic relationship, the initial phase of reciprocal signaling and responding to attraction and solicitation, in a ritual of wooing or courtship prerequisite to the acceptive (copulatory) phase. Proceptive rituals are species specific, and the signals are variably odors, visual displays, movements, sounds, or mixed. In human beings proceptive rituals are known to be represented in imagery as well as carried out in behavior; in an erotic/ sexual relationship, the initial phase in which the two partners both woo in a ritual of solicitation, attracting, responding, and courtship. The signals are chiefly odors, motions, or visual signs, or mixed/
Progestin-induced hermaphroditism
A syndrome of hermaphroditic birth defect of the sex organs induced in the 46,XX gonadally female fetus by synthetic hormones, derivatives of progesterone and 19-nortestosterone, formerly used in cases of threatened miscarriage in the untried belief, subsequently proved erroneous, that they would preserve the pregnancy. After crossing the placenta in a small percentage of cases the hormone given to the mother had a masculinizing effect on the external genitalia of the daughter fetus.
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