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===Sweating===
 
===Sweating===
 
Sweating is controlled from a centre in the preoptic and anterior regions of the [[Nervous System - CNS - Anatomy & Physiology|hypothalamus]] where thermosensitive neurons are located. The heat regulatory function of the hypothalamus is also affected by inputs from temperature receptors in the [[Skin - Anatomy & Physiology|skin]].  High skin temperature reduces the hypothalamic set point for sweating and increases the gain of the hypothalamic feedback system in response to variations in core body temperature. Overall, however, the sweating response to a rise in hypothalamic ('core') temperature is much larger than the response to the same increase in average skin temperature.
 
Sweating is controlled from a centre in the preoptic and anterior regions of the [[Nervous System - CNS - Anatomy & Physiology|hypothalamus]] where thermosensitive neurons are located. The heat regulatory function of the hypothalamus is also affected by inputs from temperature receptors in the [[Skin - Anatomy & Physiology|skin]].  High skin temperature reduces the hypothalamic set point for sweating and increases the gain of the hypothalamic feedback system in response to variations in core body temperature. Overall, however, the sweating response to a rise in hypothalamic ('core') temperature is much larger than the response to the same increase in average skin temperature.
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Sweat is not pure [[water]]; it always contains a small amount (0.2 - 1%) of [[solute]].
 
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