24 Environmental Factors - Extreme Cold

Which of the following is a method the body uses to reduce heat loss during sport and exercise in extreme cold?

• Vasodilation

• Vasoconstriction

• Sweating

• Increased heart rate

What is the primary purpose of shivering during exposure to extreme cold?

• To increase sweating

• To slow down metabolism

• To reduce blood flow to the skin

• To generate heat

Which term describes the production of heat in the body without shivering?

• Non-shivering thermogenesis

• Vasoconstriction

• Hypothermia

• Frostbite

What is a potential effect of extreme cold on the body during sport and exercise?

• Hyperthermia

• Hypothermia

• Dehydration

• Heat stroke

Which of the following is NOT a method of reducing heat loss in extreme cold?

• Vasoconstriction

• Shivering

• Sweating

• Non-shivering thermogenesis

Frostbite is best described as:

• Overheating of the body tissues

• Rapid increase in body temperature

• Excessive sweating in cold conditions

• Freezing of body tissues due to extreme cold

Which process involves the narrowing of blood vessels to conserve heat?

• Vasodilation

• Vasoconstriction

• Non-shivering thermogenesis

• Hyperventilation

Shivering thermogenesis refers to:

• Heat production through increased blood flow

• Heat loss through evaporation

• Heat production through muscle contractions

• Heat loss through radiation

Which of the following is a risk when exercising in extremely cold conditions?

• Sunburn

• Frostbite

• Heat exhaustion

• Dehydration only

Non-shivering thermogenesis is primarily achieved by:

• Metabolic activity in brown adipose tissue

• Increased sweating

• Vasodilation

• Muscle contractions