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the degree of sensible heat or cold, expressed in terms of a specific scale. See Table of Temperature Equivalents in the Appendices. Body temperature is measured by a clinical thermometer and represents a balance between the heat produced by the body and the heat it loses. Though heat production and heat loss vary with circumstances, the body regulates them, keeping a remarkably constant temperature. An abnormal rise in body temperature is called fever.

Normal Body Temperature. Body temperature is usually measured by a thermometer placed in the mouth, the rectum, or the auditory canal (for tympanic membrane temperature). The normal oral temperature is 37° Celsius (98.6° Fahrenheit); rectally, it is 37.3° Celsius (99.2° Fahrenheit). The tympanic membrane temperature is a direct reflection of the body's core temperature. These values are based on a statistical average. Normal temperature varies somewhat from person to person and at different times in each person. It is usually slightly higher in the evening than in the morning and is also somewhat higher during and immediately after eating, exercise, or emotional excitement. Temperature in infants and young children tends to vary somewhat more than in adults.
Temperature Regulation. To maintain a constant temperature, the body must be able to respond to changes in the temperature of its surroundings. When the outside temperature drops, nerve endings near the skin surface sense the change and communicate it to the hypothalamus. Certain cells of the hypothalamus then signal for an increase in the body's heat production. This heat is conducted to the blood and distributed throughout the body. At the same time, the body acts to conserve its heat. The arterioles constrict so that less blood will flow near the body's surface. The skin becomes pale and cold. Sometimes it takes on a bluish color, the result of a color change in the blood, which occurs when the blood, flowing slowly, gives off more of its oxygen than usual. Another signal from the brain stimulates muscular activity, which releases heat. Shivering is a form of this activity—a muscular reflex that produces heat.

When the outside temperature goes up, the body's cooling system is ordered into action. Sweat is released from sweat glands beneath the skin, and as it evaporates, the skin is cooled. Heat is also eliminated by the evaporation of moisture in the lungs. This process is accelerated by panting.

An important regulator of body heat is the peripheral capillary system. The vessels of this system form a network just under the skin. When these vessels dilate, they allow more warm blood from the interior of the body to flow through them, where it is cooled by the surrounding air.
Abnormal Body Temperature. Abnormal temperatures occur when the body's temperature-regulating system is upset by disease or other physical disturbances. fever usually accompanies infection and other disease processes. In most cases when the oral temperature is 37.8°C (100°F) or over, fever is present. Temperatures of 40°C (104°F) or over are common in serious illnesses, although occasionally very high fever accompanies an illness that causes little concern. Temperatures as high as 41.7°C (107°F) or higher sometimes accompany diseases in critical stages. Subnormal temperatures, below 35.6°C (96°F) occur in cases of collapse; see also symptomatic hypothermia.
absolute temperature (T) that reckoned from absolute zero (−273.15°C), expressed on an absolute scale.
basal body temperature (BBT) the temperature of the body under conditions of absolute rest; it has a slight sustained rise during the luteal phase of the menstrual cycle and can be used as an indirect indicator of when ovulation has occurred.
body temperature the temperature of the body of a human or animal; see temperature.
core temperature the temperature of structures deep within the body, as opposed to peripheral temperature such as that of the skin.
critical temperature that below which a gas may be converted to a liquid by increased pressure.
normal temperature the body temperature usually registered by a healthy person, averaging 37°C (98.6°F).
risk for imbalanced body temperature a nursing diagnosis accepted by the North American Nursing Diagnosis Association, defined as a state in which an individual is at risk of failure to maintain body temperature within the normal range.
subnormal temperature temperature below the normal. See also symptomatic hypothermia.


Abbreviation for basal body temperature.


basal body temperature.


abbreviation for basal body temperature.


n See technique, Buteyko breathing.
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3515625 per depositary share or 1/1,000th interest per share) on BB&T's Series H Non-Cumulative Perpetual Preferred Stock (NYSE: BBT PrH).
BBT group has registered an improvement of double stance phase measured but with a decreased percentage in PT group, as revealed by ANOVA analysis which showed an effect of time main factor (F(1.
Our knowledge evolved in areas of thermoregulation, normal variations in BBT, and the role of thyroid pathology on BBT.
In general, the relative capacity among the BBT, NHPT, and ARAT to detect a change in dexterous function in patients with chronic stroke after interventions remains unclear.
BBT was established in June 2008, and its bus fleet for GEMS schools is "operated" by the School Transport Services -- a subsidiary of GEMS.
The use of the BBT in Brazilian practices has shown favorable results in the Vocational Guidance field (Bernardes, 2000; Melo-Silva & Jacquemin, 1995, 1997, 2001; Melo Silva & Noce, 2004; Melo-Silva, Noce, & Andrade, 1999; Melo-Silva & Santos, 1998; Ribeiro, 1998; Sbardelini, 1997).
The BBT group did do better than those on NPH, but everyone improved [compared with controls] because of their participation in choosing which insulin regimen would be right for their family," Ms.
BBT management says its short-term focus is to bring viewers hip news and current affairs programming.
Costs include purchase of private property needed to connect the Backbone Trail, or BBT, from Zuma Ridge to the next areas of public open space to the west, the closest being Circle X Ranch and Point Mugu State Park.
A webcast of King's presentation will be available at BBT.
625 per share on BB&T's Series D Non-Cumulative Perpetual Preferred Stock (NYSE: BBT PrD), a dividend of USD351.
The TV7 and BBT TV channels filed for bankruptcy with the Sofia City Court, in accordance with the Commercial Act, reports Dnevnik.