Sympathetic nervous system
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  Sympathetic nervous system

Sympathetic nervous system

    Pertaining to that part of the autonomic nervous system which usually prepares the organism to deal more effectively with a situation of strife or emergency, as in fight or flight, the functions of which contrast with or reciprocate those of the parasympathetic system Paradoxically, the sympathetic system is also responsible for the physiological phenomenon of orgasm and/or ejaculation, but not sexual arousal.


A living thing, such as an animal, a plant, a bacterium, or a fungus.

Sudden occurrence demanding immediate remedy. Symptoms that would constitute a medical emergency include: 1.Difficulty breathing. Changes in skin color; 2.Chest pain, radiating from the breast bone or high in the abdomen to the jaw, neck, shoulder blade(s) or arms. Impending feelings of "doom"; 3.Mental status changes or loss of consciousness. Abrupt onset of a severe headache accompanied by nausea and/or vomiting, or feelings of drowsiness; 4.Fever over 105 any age. Fever over 100,4 in children less than 3 months of age; 5.Bleeding continues after 10 minutes of direct pressure.

"Short for ""contrast media."" Contrast media are X-ray dyes used to provide contrast, for example, between blood vessels and other tissue."

An intense sensation that occurs at the climax of sexual excitement that is accompanied by rhythmic muscle contractions and intense pleasure, followed by release of sexual tensions. In men, orgasm is usually accompanied by ejaculation.

Ejaculation is the process of ejecting semen from the penis, and is usually accompanied by orgasm as a result of sexual stimulation. It may also occur spontaneously during sleep (called a nocturnal emission), due to stimulating of the prostate or, rarely, due to prostatic disease.

Pertaining to sex or, more particularly, the stimulation, responsiveness, and functions of the sex organs either alone or with one or more partners.


A subjective manifestation of a pathological condition. Symptoms are reported by the affected individual rather than observed by the examiner.

Symptomatic treatment
A treatment with drugs that only affects the symptoms of the disease, not its cause - e.g. antihistamines and corticosteroids.


Stigmatic paraphilia
One of a group of paraphilias characterized by triumph wrested developmentally from sexuoerotic tragedy by means of a strategy that incorporates lust into the lovemap on the condition that the partner be, like a pagan infidel, unqualified or ineligible to be a saint defiled.

a paraphilia of the stigmatic/eligibilic type in which sexuoerotic arousal and facilitation or attainment of orgasm are responsive to, and contingent on a partner who has been tattooed, scarified, or pierced for the wearing of gold jewelry (bars or rings), especially in the genital region. The same term applies to the reciprocal paraphilic condition in which the self is similarly decorated.

Stimulus-response theory
In psychology, the theory that human responsivity is determined by contingencies of reward and punishment in the external environment.

Below the skin.

To masculinize in excess.

Sympathetic nervous system

SA Node
See Sino-Atrial Node.

Sino-Atrial Node
A part of the heart muscle, located next to the inlet from the Vena Cava, which is the "pacemaker" of the heart.

Sinus rythm
A normal heart rythm being generated by the SA node.

Sinus tachycardia
A normal, but fast rythm being generated by the SA node. This is very different than the term Ventricular Tachycardia.

The anatomical term for "above". i.e. the head is superior to the shoulder. Typically used in humans only. See Cranial/Caudal/Inferior.

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