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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
What else can I help you with?
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 an impulse can continue to travel along a nerve pathway when there's a gap between two neurons?
An impulse can continue to travel along a nerve pathway when there's a gap between two neurons through a process called synaptic transmission. At the gap, known as a synapse, neurotransmitters are released by the sending neuron, which then bind to receptors on the receiving neuron, triggering a new electrical signal to continue the impulse along the nerve pathway.
What causes a nerve impulse move along the nerve fiber?
Electrical diferences.
What cause a nerve impulse move along the nerve fiber?
Electrical diferences.
How are neurotransmitters different from the impulse that travel along the bodies of nerve cells?
Neurotransmitters are chemicals that transmit signals between nerve cells at synapses, while impulses refer to the electrical signals that travel along the nerve cells themselves. Neurotransmitters bridge the gap between two nerve cells, whereas impulses are the electrical messages that travel along the length of a nerve cell.
How can a nerve impulse travel?
100 meters per second
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.
The neurotransmitters of a neutron enable a nerve impulse to do what?
Neurotransmitters in a neuron allow a nerve impulse to be transmitted from one neuron to another by crossing the synapse and binding to receptors on the receiving neuron. This triggers an electrical or chemical signal to continue the nerve impulse along the neural pathway.
What is the relationship between a stimulus and a nerve impulse?
The neuron is the functional portion of the central nervous system, carrying impulses to the designated location. Neurons also have the role of interpreting an impulse, and waiting for a response. Neurons fall under the category of sensory neurons, interneurons and motor neurons.
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.
Where do nerve impulses travel?
Nerve impulses travel up through nerves, into the spinal cord and into one of the different lobes of the brain depending on where the impulse comes from. For example, if the impulse comes from your ear, the impulse would travel to the temporal lobe.
