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By a change in polarity as sodium ions enter the cell and potassium ions exit the cell, forming a wave of depolarization that travels along the axon until it reaches the axon terminal releases the neurotransmitters into the synaptic gap.
By an action potential, which is a depolarization of the nerve cell membrane, the neurolemma.
A nerve impulse gets transmitted along an axon in 5 steps:1) Stimulus opens Sodium ion (Na+) channels at Resting Potential
_ Must reach threshold to get Action Potential (A.P)
2) Voltage sensitive Na+ channels open
_ Na+ crosses into Intracellular fluid (ICF)
_ Depolarize the cell (which is call "Depolarization")
_ Reach +30 mV (mili voltage)
3) Na+ channels close
4) Voltage sensitive Potassium ion (K+) channels open
_ K+ crosses out to ECF (extracellular fluid)
_ Repolarize the cell (aka: repolarization)
_ Reach -90 mV
+ a hyperpolarization
_ K+ channels close
5) Na+/K+ (Sodium/ Potassium) pump restores concentrations
_ Potential goes back to -70 mV: Returning to Resting Potential
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What direction does nerve impulse travel?
Along a nerve cell, the impulse travels from the axon to the dendrites and then again to the axons through the synapse.
How are neurotransmitters different from the impulse that travel along the bodies of nerve cells?
no you give an answer im the one that asked the question
How many directions can a nerve impulse travel in?
4
What cause a nerve impulse move along the nerve fiber?
Electrical diferences.
What causes a nerve impulse move along the nerve fiber?
Electrical diferences.
How can a nerve impulse travel?
100 meters per second
How an impulse can continue to travel along a nerve pathway when there's a gap between two neurons?
Nerve pathways are slim, however neurones are small in size therefore the total amount of atoms in the impulse is enough to fit through a gap in the pathway of neurons
What is the membrane of a nerve cell is comprised of?
Its main function is to propagate the action potential (the 'impulse') along the length of the axon.
What is a nerve message called?
Well they are sent through the nervous system.
What is impulse in the nervous system?
electrical wave conducted along the nerve generated by the voltage difference across the cell membrane of the nerve cells.
What does cytoplasm do in the nerve cell?
it allows the electrical impulse to travel more easily :)
What are mircroscopic fiber that carries the nervous impulse along a nerve cell?
axon
