2. The human nervous system

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Dr Alex Lathbridge guides you through the most important GCSE Biology facts, with a few jokes thrown in too. In this second episode of our series all about homeostasis and response, Dr Alex Lathbridge breaks down the key facts about the human nervous system. He looks at the journey of an electrical impulse from receptor to effector, how neurotransmitters travel across synapses and three different types of neurons – sensory, motor and relay. Take a look on the BBC Bitesize website to find out more about this topic, with revision notes, quizzes and exam-style questions: https://www.bbc.co.uk/bitesize/guides/z2374qt/revision/2 Suitable for: Combined science AQA Synergy AQA Trilogy Edexcel Eduqas OCR Gateway Single science AQA Edexcel OCR 21st Century OCR Gateway