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NERVE IMPULSE

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biology

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NERVE IMPULSE

biology

Dilnaz Nyshanbay
1

potential potential potential electricity cations faster jumps nodes action anions resting Ranvier of membrane

Information is transferred as through the neuron . This electricity is produced due to the difference in ion concentrations inside and outside of the cell .
At normal state , the inside of the cell has more , and less positive ions , and therefore is negatively charged . Outside of the cell has more , and consequently is positively charged . This difference in charges between inside and outside of the cell is called . The normal state of the cell , when it does not transmit the signal is called . When a signal passes through the neuron , cations pass through the membrane of neuron and membrane potential changes . Outside of the membrane becomes negative , inside becomes more positive . This state is called .
Myelinated axon has parts without myelin . They are called . Cations pass through the axon membrane only in these nods . So , an action potential occurs only in nodes of Ranvier . Impulse from one node to another . This makes signal transmission much than in unmyelinated axons .