spinal, CNS neurones, responding to stimuli

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9 Terms

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3 types of neurones

sensory neurones

motor neurones

relay neurones

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what does sensory neurones do

carry electrical impulses from receptors to central nervous system

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what does relay neurones do

carry electrical impulses from sensory neurones to motor neurones

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what does motor neurones do

carry electrical impulses from central nervous system to effector organs

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what does dendron do

carries electrical impulses towards cell body

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what does axon do

carries electrical impulses away from cell body

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what does myelin sheath do

insulates the neurone

speeds up the transmission of electrical impulses

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what is a synapse?

the point where two neurones meet (the gap)

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3 steps to how synapse work (what happens in the gap)

  1. electrical impulse reaches an axon’s end

  2. electrical impulses triggers the release of a chemical called neurotransmitters

  3. neurotransmitters diffuses across the gap, and binds to the receptors, causing a new electrical impulse in the next neurone.