MDARD Michigan Core Pesticide Applicator Practice Exam

What is a common symptom of heat stress?

1. Intense shivering

2. Heavy sweating

3. Excessive yawning

4. Persistent coughing

The correct answer is: Heavy sweating

Heavy sweating is a common symptom of heat stress because it is the body's primary mechanism for thermoregulation. When the body's internal temperature rises due to high environmental temperatures or prolonged physical exertion, the sweat glands produce perspiration. As sweat evaporates from the skin surface, it cools the body down, helping to maintain a stable internal temperature. This physiological response is crucial for preventing heat-related illnesses, such as heat exhaustion or heat stroke. Other symptoms of heat stress can include dizziness, headaches, and fatigue, but excessive sweating is often the first noticeable indicator that the body is trying to cope with elevated temperatures. Recognizing heavy sweating as a sign can prompt individuals to take measures to cool down and stay hydrated, which is vital for their safety and well-being during heat exposure.