Respuesta :
Answer:
Explanation:
The perception of cold begins when nerves in the skin send impulses to the brain about skin temperature. These impulses respond not only to the temperature of the skin, but also to the rate of change in skin temperature. Nervous impulses sent to muscles generate extra metabolic heat through shivering.
The nervous system coordinates the response of the skin to cold weather in various physiological.
The physiological changes that take place in response to cold temperature are as follows:
- Experiencing cold weather stimulates cold receptors present on the surface of the skin.
- These stimulations of the receptors result in cold thermal sensations and stimulation of the sympathetic nervous system.
- This stimulation leads to vasoconstriction in the arms, skins, and legs that result in low blood flow and diminished skin that causes an increase in the thermal insulation of superficial tissues.
- Metabolic heat produced by shivering is stimulated below the thermoneutral zone
So, the given physiological changes help in coordinating the response of the skin to cold weather.
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