Homeostasis

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 is negative feedback in homeostasis?

Back

Negative feedback is a mechanism that counteracts a change in a system, helping to maintain equilibrium. For example, when blood sugar levels rise, insulin is released to lower them.

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What is positive feedback?

Back

Positive feedback is a process that amplifies a change or output in a system. An example is the release of oxytocin during childbirth, which intensifies contractions.

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What role does the pancreas play in homeostasis?

Back

The pancreas regulates blood glucose levels by releasing hormones such as insulin and glucagon.

Front

What happens when blood sugar levels are too high?

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When blood sugar levels are too high, the pancreas releases insulin to help cells absorb glucose and lower blood sugar levels.

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What happens when blood sugar levels are too low?

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When blood sugar levels are too low, the pancreas releases glucagon, which signals the liver to release stored glucose into the bloodstream.

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What is diabetes?

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Diabetes is a disease that affects the body's ability to produce or use insulin, leading to high blood sugar levels.

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What is the function of insulin?

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

Front

What is the function of glucagon?

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

Front

How does exercise affect blood sugar levels?

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Exercise can lower blood sugar levels by increasing the uptake of glucose by muscles and improving insulin sensitivity.