Controlling body temperature requires..
- Temperature receptors in the skin to detect the external temperature
- Temperature receptors in the brain the measure the temperature of the blood.
- The brain which acts as a processing centre, to receive information from the temperature receptors,responding by triggering the effectors.
- Effectors (sweat glands and muscles) to carry out the automatic response.
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- Energy loss and energy gain from your body need to be balanced so that your boys temperature remains constant.
- The temperature of your body's extremities is normally cooler than your core body temperature.
- Energy is transferred from the blood to the tissues when it reaches the cooler parts.
- If your body temperature is too high, heat needs to be transferred to the environment. This is done by sweating, since evaporation form the skin requires heat energy.
- If your body temperature is too low your body starts to shiver. Shivering is the rapid contraction and release of the muscles.
- They need energy from the increased respiration and heat is released as a by-product, warming surrounding tissue.
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Causes of heat stroke include..
- Exercising in very warm conditions.
- Very high humidity
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Symptons of heat stroke are..
- Red/dry skin.
- Low blood pressure.
- Rapid heartbeat.
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