TTinkerwise
Unlock all
biology / Human Systems / free

Homeostasis

Disturb a regulated variable and see feedback bring it toward a set point.

Follow the mechanism1 / 3

A variable moves from its set point. A disturbance creates an error between the current state and the target range the body is trying to maintain.

negative feedbackabove set point · current 86
Focus the idea
Negative feedback brings a changing variable toward a set pointThe set point is 70, the disturbance is 25, feedback strength is 70 percent, and after 50 percent of the response the variable is 86.set point 70error after response 16time →sensor → effector
set point70
current86
error16
feedback70%

A sensor compares the current value with a target. The error signal is what starts the corrective response.

Homeostasis does not mean a value never changes; it means feedback keeps a regulated variable within a useful range.

04 / PRACTICE

Make the biology yours.

0 / 3 checked

Answer from the model, then use the explanation to connect the visual mechanism to the biological rule.

CHECK 1 / 3

What is the set point used for?