Concept of Homeostasis

What is homeostasis?

• A process of maintaining biologically stable condition of internal environment inside the body of a living organism

• A process of maintaining biologically stable condition of external environment inside the body of a living organism

• The process of photosynthesis in plants

• The ability to predict weather patterns

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What are 3 components of homestasis?

• Effector

• Control center

• Affector

• Receptor

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What is negative feedback mechanism?

• the correction mechanism causes a change in a variable that is same in direction to the initial change

• negative feedback mechanisms in homeostasis involve processes that detect and counteract deviations from a set point to maintain internal stability.

• negative feedback mechanisms in homeostasis involve processes that amplify deviations from a set point.

• a mechanism that stop or reduce the intensity of initial stimulus

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Internal environment can be affected by:

• external factor

• chemical factor

• physical factor

• emotional factor

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How do negative feedback mechanisms help maintain stability in the body?

• By detecting deviations from a set point and activating responses to counteract these changes.

• By shutting down all bodily functions

• By causing extreme fluctuations in body temperature

• By promoting rapid cell division

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What happens when blood glucose level higher than normal level (hyperglycemia)

• Beta cell of Islet of Langerhans in pancrease secrete insulin

• Alpha cell of Islet of Langerhans in pancrease secrete insulin

• Beta cell of Islet of Langerhans in pancrease secrete glucagon

• Alpha cell of Islet of Langerhans in pancrease secrete glucagon

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What happens when homeostasis is disrupted?

• Homeostasis improves

• No impact on health

• Health issues or diseases may occur.

• Body functions normally

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Glucagon stimulates;

• the conversion of excessive glucose to fat in adipose tissue

• the conversion of glucose to glycogen by glycogenesis

• the breakdown of glycogen to glucose by glycogenolysis

• the conversion of fatty acid and amino acid to glucose by gluconeogenesis

Explain the relationship between homeostasis and disease prevention.

• Homeostasis helps maintain internal stability and balance, which in turn supports the body's ability to prevent diseases.

• Homeostasis causes diseases

• Disease prevention disrupts homeostasis

• Homeostasis has no impact on disease prevention

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