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- The thermoregulation system includes the hypothalamus, sweat glands, circulatory system, and skin. The human body maintains a temperature of about 98.6°F (37°C) using various physical processes. These include sweating to lower the body temperature, shivering to raise it, and narrowing or relaxing blood vessels to alter blood flow.
www.medicalnewstoday.com/articles/thermoregulation
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Jul 30, 2023 · Thermoregulation is the maintenance of physiologic core body temperature by balancing heat generation with heat loss. A healthy individual will have a core body temperature of 37 +/- 0.5°C (98.6 +/- 0.9°F), the temperature range needed for the body's metabolic processes to function correctly.
- Eva V. Osilla, Jennifer L. Marsidi, Sandeep Sharma
- 2023/07/30
- 2019
- Overview
- What is thermoregulation?
- Internal body temperature
- How does thermoregulation work?
- The takeaway
Thermoregulation refers to how the body maintains its internal temperature. If your body temperature becomes too cold or hot, it may lead to severe symptoms and even death.
Thermoregulation is a process that allows your body to maintain its core internal temperature. All thermoregulation mechanisms help return your body to homeostasis. This is a state of equilibrium.
A typical internal body temperature falls within a narrow window. The average person has a baseline temperature between 98°F (37°C) and 100°F (37.8°C). Your body has some flexibility with temperature. However, getting to the extremes of body temperature can affect your body’s ability to function.
For example, if your body temperature falls lower than 96°F (35°C) or lower, you have hypothermia. This condition can lead to cardiac arrest, brain damage, or even death.
You can experience heat stroke if your body temperature rises above 104°F (40°C). Heat stroke is considered a medical emergency. If your body temperature rises to high, you can experience brain damage or even death.
Many factors can affect your body’s temperature, such as spending time in cold or hot weather.
Factors that can raise your internal temperature include:
•fever
When your internal temperature changes, sensors in your central nervous system send messages to your hypothalamus. In response, it sends signals to various organs and systems in your body. They respond with a variety of mechanisms.
If your body needs to cool down, these mechanisms include:
•Sweating: Your sweat glands release sweat, which cools your skin as it evaporates. This helps lower your internal temperature.
•Vasodilatation: The blood vessels under your skin get wider. This increases blood flow to your skin where it is cooler — away from your warm inner body. This lets your body release heat through heat radiation.
If your body needs to warm up, these mechanisms include:
•Vasoconstriction: The blood vessels under your skin become narrower. This decreases blood flow to your skin, retaining heat near the warm inner body.
If your internal temperature drops or rises outside of the typical range, your body will take steps to adjust it. This process is known as thermoregulation. It can help you avoid or recover from potentially dangerous conditions like hypothermia.
Oct 8, 2021 · These include sweating to lower the body temperature, shivering to raise it, and narrowing or relaxing blood vessels to alter blood flow. If an individual is unable to regulate their...
Constricted blood vessels in the extremities divert superficial blood flow to the body’s core, thus, reducing the radiation or conduction of heat into the environment. Vasoconstriction increases the resistance to blood flow, and thus, increases blood pressure.
May 1, 2023 · If the air is 100% humidified or if the body is in water, body temperature rises any time the environmental temperature rises above 34.4 C (94 F). If the air is dry and sufficient convection air currents are flowing, a person can withstand many hours of air temperature at 54.4 C (130 F).
- Hani Yousef, Edris Ramezanpour Ahangar, Matthew Varacallo
- 2023/05/01
- 2018
In general, skin blood flow and sweating continue to increase in proportion to internal temperature until a steady state is reached at which heat dissipation and heat generation are equal, and therefore body temperature is constant, or until maximal responsiveness is reached.
Oct 8, 2020 · As body temperature rises, the heart works harder to pump blood to the periphery to cool the body. As the heart muscle weakens, cardiac output falls and oxygen supply to the organs, including the brain, is reduced.
