AP BIOLOGY

Detailed explanation-1: -The sensory receptor or sensor provides input to the control center. Control center is the body structure that determines the normal range of the variable, or set point.

Detailed explanation-2: -A set point is the physiological value around which the normal range fluctuates. A normal range is the restricted set of values that is optimally healthful and stable.

Detailed explanation-3: -The set point in homeostasis is the balanced physiological value for a variable. For example, in humans, our set point for temperature is 98.6 degrees Fahrenheit. When our body goes above this temperature, homeostatic mechanisms kick in that help to decrease our body temperature, such as sweating.

Detailed explanation-4: -Receptors (sensors) detect changes in the variable. Control centers (integrators) compare the variable in relation to a set point and signal the effectors to generate a response.