Question

How does our skin provide protection to our body against the following?
(b) Excessive loss of heat in severe cold.

Answer 1

• Excessive loss of heat in severe cold is prohibited by vasoconstriction.
• When the outside temperature is low, the blood vessels get narrowed and there is a reduced supply of blood to the skin.
• This results in less formation of sweat (sweat glands produce less sweat).
• So, there will be less loss of heat due to a lesser amount of vaporisation of sweat.