Science
What is Homeostasis?
Homeostasis is how your body keeps its internal conditions — like temperature, blood sugar, and water balance — stable despite changes outside. Sensors detect any drift and trigger responses that nudge things back to the ideal range.
See it, don’t just read it.
Watch a 2-minute lesson with voice + animation that explains homeostasis.
Key things to understand
- 1It maintains a steady internal environment so cells can work.
- 2It runs on feedback: detect a change, then counteract it.
- 3Examples: sweating to cool down, shivering to warm up, insulin lowering blood sugar.
- 4Most regulation uses 'negative feedback' that reverses the change.
- 5Losing homeostasis underlies many illnesses.
Frequently asked questions
- What is an example of homeostasis?
- Keeping body temperature near 37°C: you sweat when too hot and shiver when too cold, both pushing temperature back to normal.
- What is negative feedback?
- A control loop that reverses a change — like a thermostat shutting off heat once a room is warm enough — keeping a variable stable.
- Why is homeostasis important?
- Cells only work within narrow conditions, so steady internal balance keeps the whole body functioning and alive.