Question

Cold 

A. Injury to feet exposed for long periods to 5–10^oC is due to frostbite. 

B. Injury to the extremities is made less likely by increased affinity of hemoglobin for O₂ at low temperatures. 

C. Environments may induce a five-fold rise in resting metabolic rate. 

D. Water immersion causes death from hypothermia more rapidly in fat than in thin people. 

E. Water immersion of the hand at 5^oC is painless.

Answer 1

A. False The tissues do not freeze at this temperature; ‘trench foot’ injury can occur. 

B. False Hypoxia is an increased risk due to poor release of oxygen to the tissues. 

C. True Increased muscle tone and shivering account for this. 

D. False Fat people have much better insulation of their body core. 

E. False It is very painful, a warning of the danger of such temperatures.