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The nervous system
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From stimulus to response

From stimulus to response

A stimulus is a detectable change in the internal or external environment, such as light, pressure, or rising blood carbon dioxide. Receptors detect the stimulus and convert it into a nervous signal, while effectors such as muscles or glands carry out the response.

The nervous system Lesson

  1. A Level
  2. /Biology
  3. /The nervous system

Step-by-step lessons on Eduqas A Level Biology The nervous system. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.

Lessons