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Published byPosy Pitts Modified over 9 years ago
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1.The brain can only understand electrical signals 2.Receptors in the eyes change light into electrical signals 3.Receptors in the ears change sound into electrical signals 4.The iris can change the size of the pupil depending on light intensity Sense Organs Sense organs
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The Eye
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Iris and Pupil
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Vibrations to the Ear
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The Ear
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1.The nervous system transports electrical impulses from receptors to the central nervous system (brain and spinal cord) and then back to effectors 2.There are three types of neurone 3.The reflex arc allows us to make emergency decisions in less time The Nervous System
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Receptor cells
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Neurones Neurones
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Neurones
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The Nervous System
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Reflex actions
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Wordsearch Wordsearch
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Quiz Quiz
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