When the surrounding temperature is low, heat is lost from the body by means of
A)radiation
B)conduction/convection
C)nonshivering thermogenesis
D)a and b
E)all of the above

Question

Quizplus · Accepted Answer

When the surrounding temperature is low, heat is lost from the body by means of radiation, which is the transfer of heat energy in the form of electromagnetic waves, and by means of conduction/convection, which is the transfer of heat energy through direct contact with a colder object or fluid. Nonshivering thermogenesis is a mechanism by which the body generates heat through the action of brown adipose tissue, but this is not a primary means of heat loss in response to cold temperatures. Therefore, options A and B are correct, while option C is not. Thus, D, "a and b," is the best choice. Option E, "all of the above," is incorrect because nonshivering thermogenesis is not a significant means of heat loss in response to cold temperatures.

When the Surrounding Temperature Is Low, Heat Is Lost from the Body