Final answer:
Homeostasis is the maintenance of equilibrium around a set point. Effector is responsible for making adjustments to bring the value back to the set point.
Step-by-step explanation:
Homeostasis refers to the maintenance of equilibrium around a specific value called a set point. The body's systems will usually attempt to go back to this point, even though there are normal fluctuations. In this process, an effector is responsible for making the necessary adjustments to bring the value back to the set point. For example, if the body becomes too warm, adjustments are made to cool it down.