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Related Concept Videos

Body Temperature01:07

Body Temperature

1.4K
Body temperature reflects the equilibrium between heat production and heat loss within the body. Most heat is generated by metabolically active tissues, particularly the liver, heart, brain, kidneys, and endocrine organs. At rest, skeletal muscles contribute 20–30% of total heat production, but during vigorous exercise, this can increase up to 30–40 times.
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C...
1.4K
Body Temperature01:25

Body Temperature

4.1K
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
4.1K
Factors Affecting Body Temperature01:28

Factors Affecting Body Temperature

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As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may  include:
8.8K
Increased Body Temperature01:25

Increased Body Temperature

6.5K
A body temperature above  38°C  (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in...
6.5K
Decreased Body Temperature01:29

Decreased Body Temperature

1.0K
A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
1.0K
Homeostatic Imbalances in Body Temperature01:19

Homeostatic Imbalances in Body Temperature

4.3K
Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...
4.3K

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Related Experiment Video

Updated: Jan 26, 2026

Conducting Elevated Temperature Normal and Combined Pressure-Shear Plate Impact Experiments Via a Breech-end Sabot Heater System
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Conducting Elevated Temperature Normal and Combined Pressure-Shear Plate Impact Experiments Via a Breech-end Sabot Heater System

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Normal Body Temperature: A Systematic Review.

Ivayla I Geneva1,2, Brian Cuzzo1, Tasaduq Fazili1,2,3

  • 1State University of New York Upstate Medical University, Syracuse, NY, USA.

Open Forum Infectious Diseases
|April 13, 2019
PubMed
Summary
This summary is machine-generated.

Normal body temperature ranges vary by measurement site and age. Older adults generally have slightly lower temperatures than younger adults, with no significant gender differences observed in this comprehensive review.

Keywords:
body temperaturefeverhypothermianormothermia

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Area of Science:

  • Physiology
  • Medical Research

Background:

  • Establishing accurate normal body temperature ranges is crucial for clinical diagnosis.
  • Previous studies have yielded varied results, necessitating a consolidated analysis.

Purpose of the Study:

  • To systematically review and synthesize data on measured normal body temperature in healthy adults.
  • To identify key factors influencing normal body temperature variations.

Main Methods:

  • Comprehensive literature search of PubMed (1935-2017) and manual reference searching.
  • Inclusion of prospective studies with measured normal body temperature in healthy adults (≥18 years).
  • Analysis of data from 36 articles, comprising 9227 measurement sites from 7636 subjects.

Main Results:

  • Normal temperature ranges (mean ± 2 SD) varied by site: rectal (36.32-37.76°C), tympanic (35.76-37.52°C), urine (35.61-37.61°C), oral (35.73-37.41°C), and axillary (35.01-36.93°C).
  • Older adults (≥60 years) exhibited lower average temperatures by 0.23°C compared to younger adults (<60 years).
  • Gender differences in body temperature were found to be insignificant.

Conclusions:

  • The site of measurement and patient's age are the most significant factors influencing normal body temperature.
  • Current reference point for normothermia (36.8°C) aligns closely with findings, with minor differences lacking physiological significance.