What are two common physiological responses the body has to cold stress?

What are two common physiological responses the body has to cold stress?

• A. Reducing blood flow through the skin, and shivering
• B. Increasing blood flow and sweating
• C. Deep breathing and hyperventilation
• D. Fasting and weight loss

Answer: (A)

When the body encounters cold, it works to conserve heat and generate warmth. The two common physiological responses are vasoconstriction of the skin vessels, which reduces blood flow to the surface and minimizes heat loss, and shivering, which is rapid muscle activity that produces heat to raise core temperature. Other options describe responses that aren’t typical for cold stress: increasing blood flow and sweating would actually increase heat loss and is more associated with heat exposure; deep breathing and hyperventilation are respiratory responses not specifically tied to cold; fasting and weight loss are metabolic changes and not immediate cold-induced reflexes.

When the body encounters cold, it works to conserve heat and generate warmth. The two common physiological responses are vasoconstriction of the skin vessels, which reduces blood flow to the surface and minimizes heat loss, and shivering, which is rapid muscle activity that produces heat to raise core temperature.

Other options describe responses that aren’t typical for cold stress: increasing blood flow and sweating would actually increase heat loss and is more associated with heat exposure; deep breathing and hyperventilation are respiratory responses not specifically tied to cold; fasting and weight loss are metabolic changes and not immediate cold-induced reflexes.