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Related Concept Videos

Thermoregulation01:26

Thermoregulation

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The human body has a sophisticated thermoregulation system that employs negative feedback mechanisms to maintain an optimal core temperature. When the core temperature drops, peripheral and central thermoreceptors send signals to the hypothalamus, activating the heat-promoting center. This center triggers several responses aimed at increasing the core temperature. First, vasoconstriction reduces the flow of warm blood from internal organs to the skin so that the heat is not lost from the skin,...
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Assessing Body Temperature - Axilla01:14

Assessing Body Temperature - Axilla

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Procedural Guide for Assessing Axillary Body Temperature using a Digital Thermometer:
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
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Decreased Body Temperature01:29

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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...
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Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

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Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.  
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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.
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Thermosensation01:43

Thermosensation

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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Related Experiment Video

Updated: Mar 21, 2026

Using a Thermal Camera to Measure Heat Loss Through Bird Feather Coats
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Using a Thermal Camera to Measure Heat Loss Through Bird Feather Coats

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Thermal acclimation in a small Afrotropical Bird.

Lindy J Thompson1, Mark Brown1, Colleen T Downs1

  • 1School of Life Sciences, University of KwaZulu-Natal, P Bag X01, Scottsville, 3201, South Africa.

Behavioural Processes
|May 3, 2016
PubMed
Summary

Acclimation times for wild-caught birds in labs are often unknown. This study found resting metabolic rates in Cape White-eyes remained stable, suggesting short-term acclimation may not be necessary for some physiological studies.

Keywords:
AfrotropicalCape white-eyeResting metabolic rateSex differencesThermal acclimationZosterops virens

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Area of Science:

  • Zoology
  • Physiology
  • Ecology

Background:

  • Wild-caught animals are crucial for physiological research, but acclimation periods are poorly understood.
  • Afrotropical species are particularly underrepresented in laboratory studies.
  • Understanding acclimation is vital for accurate physiological data from wild subjects.

Purpose of the Study:

  • To determine the acclimation duration for wild-caught Afrotropical birds.
  • To investigate the impact of different thermal environments on metabolic variables.
  • To assess if immediate metabolic measurements are feasible for small passerines.

Main Methods:

  • Weekly measurements of metabolic variables over 8 weeks in Cape White-eyes (Zosterops virens).
  • Birds were housed in two constant thermal environments: 25°C and 29°C.
  • Body mass and resting metabolic rate were the primary variables assessed.

Main Results:

  • Body mass increased significantly in the first three weeks, then stabilized, with no difference between thermal groups.
  • Whole animal resting metabolic rates remained constant throughout the 8-week period.
  • Resting metabolic rates were lower at 29°C compared to 25°C.

Conclusions:

  • Acclimation periods for resting metabolic rate measurements may be shorter than previously assumed for some species.
  • Freshly wild-caught small passerines might not require extensive acclimation before physiological measurements.
  • These findings could streamline research protocols for wild-caught birds, especially Afrotropical species.