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Maintaining Water Balance

Human Biology (Year 12)

Osmoregulation Feedback Loops

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Ben Whitten

What is the feedback loop for low plasma water levels?

What is the feedback loop for high plasma water levels?

What is the thirst reflex?

A decrease in the water concentration of the plasma (due to water loss), increases osmotic pressure, which in turn stimulates the thirst centre in the hypothalamus. This initiates the thirst response.

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