Nervous system key words

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Resting potential
The potential difference across the membrane of a cell when no impulse is being conducted
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Action potential
The rapid rise and fall of the electrical potential across a nerve cell as a nervous impulse passes
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Depolarisation
A temporary reversal of potential across the membrane of a neurone such that the inside becomes less negative than the outside as an action potential is transmitted
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Absolute refractory period
Period during which no new action potential may be initiated
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Saltatory conduction
Transmission of an nervous impulse along a myelinated axon, in which the action potential jumps from one node of Ranvier to the adjacent node
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Neurotransmitter
A chemical secreted in response to an action potential which carries a chemical signal across a synapse, from one neurone to the next
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Other cards in this set

Card 2

Front

The rapid rise and fall of the electrical potential across a nerve cell as a nervous impulse passes

Back

Action potential

Card 3

Front

A temporary reversal of potential across the membrane of a neurone such that the inside becomes less negative than the outside as an action potential is transmitted

Back

Preview of the back of card 3

Card 4

Front

Period during which no new action potential may be initiated

Back

Preview of the back of card 4

Card 5

Front

Transmission of an nervous impulse along a myelinated axon, in which the action potential jumps from one node of Ranvier to the adjacent node

Back

Preview of the back of card 5
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