The skin plays an important role in maintaining a constant body temperature in mammals. What are the skin structures involved in heat regulation?

1) Evaporation of sweat. Through sweat glands, sweat is released on the surface of the skin, then evaporates, taking heat from the body and lowering its temperature.
2) The hair (coat) retains air, preventing the outflow of warm air from the body and the influx of cold.
3) Subcutaneous fat also retains heat inside the body.
4) Change in the lumen of the capillaries: narrowing – reduces heat transfer; expansion – reinforces.

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