An Example of Effectors' Roles in Homeostatic Responses is Observable

Question

An example of effectors' roles in homeostatic responses is observable when
A)an increase in body temperature results from involuntary shivering.
B)an increase in body temperature results from exercise.
C)the rising sun causes an increase in body temperature in a stationary animal.
D)an increase in body temperature results from fever.
E)a decrease in body temperature results from shock.

Accepted Answer

Involuntary shivering, which is controlled by the effector muscles, is a homeostatic response to an increase in body temperature. The shivering generates heat, which helps to bring the body temperature back to its normal range. The other choices involve external factors (exercise, the rising sun) or illness (fever, shock) that can disrupt homeostasis, but they do not involve the direct action of effectors in response to a change in the internal environment.