Homeostasis

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is the role of feedback loops in homeostasis?

Back

Feedback loops help maintain homeostasis by regulating physiological processes to keep conditions stable.

Front

What is a negative feedback loop?

Back

A negative feedback loop is a process that counteracts a change in a system, helping to return it to its set point.

Front

What is a positive feedback response?

Back

A positive feedback response amplifies a change in a system, moving it away from its set point until a specific outcome is achieved.

Front

How does shivering help maintain body temperature?

Back

Shivering generates heat through muscle activity, helping to increase body temperature when the environment is cold.

Front

What is the function of the nervous system in homeostasis?

Back

The nervous system controls and coordinates body activities through electrical impulses, allowing for rapid responses to changes.

Front

What is the endocrine system's role in homeostasis?

Back

The endocrine system regulates long-term changes in the body through hormones, helping to maintain homeostasis.

Front

Give an example of a negative feedback mechanism in the body.

Back

An example is the regulation of body temperature: when body temperature rises, mechanisms like sweating are activated to cool the body down.

Front

What happens during a positive feedback loop when you get a cut?

Back

When you get a cut, hormones signal platelets to stop the bleeding, and platelets release more hormones to attract even more platelets.

Front

What is the set point in homeostasis?

Back

The set point is the ideal value or range that a physiological variable should maintain for optimal functioning.