Front

What is homeostasis?

Back

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

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What are feedback loops?

Back

Feedback loops are biological mechanisms that help regulate physiological processes by using information from the output to adjust the input.

Front

What is a negative feedback loop?

Back

A negative feedback loop is a control mechanism that counteracts a change in a system, helping to maintain stability (e.g., body temperature regulation).

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What is a positive feedback loop?

Back

A positive feedback loop is a control mechanism that amplifies a change in a system, leading to an even greater change (e.g., childbirth contractions).

Front

What role does insulin play in the body?

Back

Insulin is a hormone produced by the pancreas that helps lower blood sugar levels by facilitating the uptake of glucose into cells.

Front

What happens when blood sugar levels rise?

Back

When blood sugar levels rise, the pancreas releases insulin to help lower the glucose concentration in the blood.

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What is the function of glucagon?

Back

Glucagon is a hormone produced by the pancreas that raises blood sugar levels by promoting the release of glucose from the liver.

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 an example of a negative feedback loop in the human body?

Back

Blood glucose regulation is an example of a negative feedback loop, where insulin and glucagon work together to maintain stable blood sugar levels.

Front

What is temperature regulation an example of?

Back

Temperature regulation is an example of a negative feedback loop that helps maintain a constant body temperature.