Humans may decrease their body temperature in hot weather by

Question

Quizplus · Accepted Answer

In hot weather, humans decrease their body temperature through vasodilation (blood vessels near the surface of the skin expand to allow more blood flow to the skin, releasing heat) and sweating (moisture on the skin evaporates, also releasing heat). Constricting blood vessels would actually retain heat within the body, so answer choices A and E can be ruled out. Sweating alone may not be sufficient to regulate body temperature in all situations, so answer choice C can be eliminated. Vasodilation alone, without sweating, may release some heat but not as effectively as when combined with sweating, so answer choice D can also be ruled out. Therefore, the best choice is B.

Humans May Decrease Their Body Temperature in Hot Weather by