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11 Cards in this Set
- Front
- Back
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What are the two types of neuron?
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Motor neurone
sensory neurone |
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In which direction do the sensory neurones travel
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From the extremities to the brain
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In which direction do the motor neurones travel
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From the brain to the extremities
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How many K+ ions are actively transported into the cell per 3 Na+ ions moved out
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2
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Why is this process active transport
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Because it moves down a concentration gradient
and it requires energy in the form of ATP |
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What effect does myelination have on neurones
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Increases the speed of conduction
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Why does myelination have this effect
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because it means that less action potentials have to occur along each neurone
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Where do these action potentials occur on a myelinated neurone
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At the nodes of ranvier
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where are the nodes of ranvier located
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Inbetween schwann cells
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What are schwann cells made up of
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Lipids- fats
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Why are they made up of fats
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Because fat is a god electrical insulator, and the neurones message is electrical
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