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7.3 Homeostasis and thermoregulation
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Why homeostasis matters

Why homeostasis matters

Homeostasis is the maintenance of a constant internal environment in response to internal and external change. Here, constant means kept close to a normal level, not perfectly fixed every second.

7.3 Homeostasis and thermoregulation Lesson

  1. GCSE
  2. /Biology
  3. /7.3 Homeostasis and thermoregulation

Step-by-step lessons covering Edexcel GCSE Biology 7.3 Homeostasis and thermoregulation for Foundation and Higher tier. Each lesson breaks down 7.3.1 Importance of a constant internal environment, 7.3.2 Importance of homeostasis, 7.3.3a Thermoregulation via the skin and hypothalamus, and 7.3.3b Vasoconstriction and vasodilation in thermoregulation, then works through exam-style questions in Paper 1 and Paper 2 format. Start with the foundational topics and build up to the higher-tier material.