When environmental temperatures are cold,heat may be produced and/or conserved in the body by

Question

Quizplus · Accepted Answer

Shivering is a mechanism by which the body generates heat when external temperatures are cold. It involves rapid and involuntary muscle contractions, which break down ATP and release heat energy. This heat helps to warm up the body and maintain its core temperature.

Answer: B
 Decreasing the metabolic rate is another way in which the body conserves heat in cold environments. By lowering the metabolic rate, the body reduces the amount of energy it uses and thus produces less heat. This helps to prevent excessive energy loss and helps to maintain the body's internal temperature.

Option A and D are incorrect because dilation of cutaneous blood vessels and delivery of more blood to the skin both promote heat loss, which is not helpful in cold environments.

When Environmental Temperatures Are Cold,heat May Be Produced And/or Conserved