why do we turn paler in response to cold, and redder in response to heat?
Why do we turn paler in response to cold, and redder in response to heat?
Answer: Our skin plays a crucial role in regulating body temperature through a process called thermoregulation. When we are exposed to cold temperatures, our blood vessels constrict to conserve heat and prevent it from escaping the body. This reduces blood flow to the skin’s surface, causing the skin to appear paler.
Conversely, when we are exposed to heat, our blood vessels dilate to increase blood flow to the skin’s surface, allowing heat to be released from the body. This increased blood flow near the surface of the skin gives it a redder appearance. These responses help our body maintain a stable internal temperature despite external temperature changes.