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In neurons especially, and in all cells to a degree, electrical charges are moved across the plasma membrane via ion channels and pumps to establish an electrical gradient. The strength of this gradient is determined by how ion channels are opened.
At the dendrite side of the neuron, inputs from other neurons cause the membrane to lose some of its charge separation, to depolarize. This change in voltage, a graded potential, only affects a small area of the neuron and doesn't travel. However, if this graded potential is strong enough that it can reach the axon hillock, it can start to open voltage-gated ion channels, which are found all along the long axon, but especially at the hillock. If enough ion channels are opened at the hillock, then this depolarization will open other voltage-gated ion channels in a chain reaction. This can then open up the voltage-gated ion channels next to it, and so on down the axon. This wave of depolarization is called an "action potential." This signal can then travel long distances and affect other neurons.
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What travels through the neuron?
An electrical impulse will travel through a neuron.
What us synapse?
synapse are the microscopic gapes between the neurons where helps in passing of the chemicals from one neuron to other. A small amont of chemical substance is released from one neuron into the synapse and this chem. substance changes to electrical impluses and enters the dentrites of the other neuron.
What are electrical junctions in the human body?
Electrical junctions in the human body are where the axons of nerves (singly called neurons) send a chemical to the dendrite(s) of nearby neuron(s), said chemical creating a weak electrical current in the next neuron. These neuron to neuron junctions are called, "Synapses".
What message does neuron carry?
Electrical impulses.
What does communication in the nervous system depend on which are electrical impulses that travel from neuron to neuron?
action potentials
How does a signal cross from the axon of the neuron to the receiving cell?
When the electrical signal reaches the end of an axon, neurotransmitters are released. They travel across the synapse. Once they reach the receiving cell, they create a new electrical signal.
How does a signal crosses from the axon of a neuron to a receiving cell?
When the electrical signal reaches the end of an axon, neurotransmitters are released. They travel acrross the synapse. Once they reach the receiving cell, they create a new electrical signal.
What is a sudden electrical charge in a neuron membrane is?
Yes.
A neuron transmits a nerve impulse as a wave of?
electrical
What is the path of an electrical impulse as it moves through a neuron?
The electrical impulse travels into the dendrites, the "input" of the neuron, and into the soma or "body" where the signal gets processed. From there, the processed signal travels down the axon or "output" and into the dendrites of another neuron.
What is inside a polarized neuron?
There is electrical potential difference between out side of the cell and inside of the cell, in case of the polarized neuron. This electrical difference is lost in case of depolarization. That is what can be said roughly.
What are the two elements needed for neural communication to happen?
Neural communication requires an electrical signal to travel down the axon of a neuron, which is generated by changes in ion concentrations across the cell membrane. At the synapse, neurotransmitters are released from the presynaptic neuron and received by receptors on the postsynaptic neuron to transmit the signal.
