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12 Cards in this Set
- Front
- Back
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Stimulus |
A change in the environment. For example lightning. |
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Neurone |
A nerve cell. |
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Receptor |
A cell that detects stimuli. It can also produce an electrical impulse. |
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Response |
The action that is carried out as the result of a stimulus. |
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Coordinator |
The brain or spinal cord. |
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Why is the nervous system important? |
• protects us from danger • coordinates our behaviour • enables us to react to our environments |
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What are the receptors in skin sensitive to? |
• touch • pressure • pain • temperature |
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What are the receptors in a tongue sensitive to? |
Chemicals in food and liquids. |
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What are the receptors in a nose sensitive to? |
Chemicals in the air. |
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What are the receptors in an eye sensitive to? |
Light. |
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What are the receptors in an ear sensitive to? |
• position of head • sound |
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State the order of the reflex arc |
• stimulus • receptor • sensory neurone • a relay neurone (that's in the central nervous system) • motor neurone • the effector (gland or muscle) |
