In heat stroke, the body's ability to regulate temperature fails, leading to what core problem?

• A. Excessive sweating
• B. Normal temperature
• C. Inability to dissipate heat
• D. Increased metabolic rate with cooling

Answer: (C)

The key idea is that heat stroke happens when the body's temperature-regulating systems can no longer shed heat effectively. Normally, the body cools itself through sweating and by sending more blood to the skin so heat can dissipate into the surroundings. When these mechanisms fail or are overwhelmed, heat accumulates faster than it can be removed, causing core temperature to rise sharply. That failure to dissipate heat leads to the dangerous hyperthermia and potential organ dysfunction seen in heat stroke.

Excessive sweating would aid cooling, not hinder it, so it isn’t the problem here. Normal temperature would imply regulation is still working, which isn’t the case in heat stroke. An increased metabolic rate with cooling isn’t how the body resolves heat; the issue is the inability to get rid of the excess heat, not an overproduction of it paired with cooling.