The principal organ concert in the loss of heat from the body is
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The hypothalamus is the processing centre in the brain that controls body temperature. It does this by triggering changes to effectors, such as sweat glands and muscles controlling body hair. Heat stroke can happen when the body becomes too hot; and hypothermia when the body becomes too cold.
Temperature control
Temperature control is the process of keeping the body at a constant temperature of 37°C.
Our body can only stay at a constant temperature if the heat we generate is balanced and equal to the heat we lose.
The warm thermogram (l) shows the body at normal temperature 37°C (red) - the extremities are cooler (peach and pink areas). The cool thermogram (r) illustrates how the body diverts heat to the core organs to aid survival - the extremities are the coldest areas below 25°C (dark blue).
Although our core temperature must be 37ºC, our fingers and toes can be colder. This is because energy is transferred from the blood as it travels to our fingers and toes.
Temperature control
Temperature control is the process of keeping the body at a constant temperature of 37°C.
Our body can only stay at a constant temperature if the heat we generate is balanced and equal to the heat we lose.
The warm thermogram (l) shows the body at normal temperature 37°C (red) - the extremities are cooler (peach and pink areas). The cool thermogram (r) illustrates how the body diverts heat to the core organs to aid survival - the extremities are the coldest areas below 25°C (dark blue).
Although our core temperature must be 37ºC, our fingers and toes can be colder. This is because energy is transferred from the blood as it travels to our fingers and toes.
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