the nervous system unit 1 0.0 / 5 ? ScienceNerves and the nervous systemGCSEAQA Created by: Kieu TrinhCreated on: 20-03-13 09:17 What does the nervous system do? The nervous system enables humans to react to their surroundings and coordinate behaviour 1 of 5 What do receptors detect? Stimuli 2 of 5 What do light receptors have? They have a nucleus, cytoplasm and cell membrane 3 of 5 What do reflex actions involve? They often involve sensory, relay and motor neurones 4 of 5 How does a muscle respond in a reflex action? The muscle responds by contracting 5 of 5
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