Environmental air temperature can fluctuate many degrees during the course of a day. A human's body temperature
A) can also fluctuate many degrees.
B) is lowered by shivering.
C) must be maintained within a range of a few degrees.
D) is not maintained internally but fluctuates with the air temperature.
E) is raised by sweating and dilation of blood vessels in the skin.

Question

Quizplus · Accepted Answer

Human body temperature must be maintained within a narrow range of about 36.5–37.5°C (97.7–99.5°F) for optimal physiological and biochemical functions. A deviation of a few degrees from this range can lead to serious health issues or even be life-threatening.

Environmental Air Temperature Can Fluctuate Many Degrees During the Course