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What structure in the neuron helps to speed up the transmission of the action potential?
Wiki User
∙ 11y ago
To speed up transmission of the action potential from where it originates (axon hillock) to where it ends (axon terminal), the action potential propagates by 'saltatory conduction' - and the structure that makes this possible is the insulating layer of myelin sheath that wraps around the axon, arranged in 'nodes' along its length. Technically, it's the gaps between the nodes (nodes of Ranvier) that cause the action to continually propagate and maintain its fast conduction velocity.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoaxon
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A neuron will generate action potentials when it?
A neuron will generate action potential when it is stimulated by a neurotransmitter.
The start of an action potential?
An action potential starts when sodium channels in a neuron end open and sodium ions rush is, depolarizing the neuron's membrane.
The action potential is generated when a stimulus?
When a stimulus stimulates a neuron above the threshold, the action potential is generated.
What causes the vesicles inside a neuron to fuse with the plasma membrane?
An action potential in the neuron
Corresponds to the period of repolarization of the neuron?
Action Potential
A neuron will generate action potentials when it?
A neuron will generate action potential when it is stimulated by a neurotransmitter.
What cell that generates action potential?
neuron
The start of an action potential?
An action potential starts when sodium channels in a neuron end open and sodium ions rush is, depolarizing the neuron's membrane.
The action potential is generated when a stimulus?
When a stimulus stimulates a neuron above the threshold, the action potential is generated.
What causes the vesicles inside a neuron to fuse with the plasma membrane?
An action potential in the neuron
Corresponds to the period of repolarization of the neuron?
Action Potential
Which part of the neuron can propagate an action potential?
axon
Where in a neuron can an action potential be generated?
axon hillock
When an action potential reaches the end of a neuron it triggers the release of?
When an action potential reaches the end of a neuron, it triggers the release of neuotransmitters such as epinephrine (sympathetic) or achetylcholine (parasympathetic).
What is the rapid change in membrane's potential caused by the deplariztion of a neuron?
action potential
What determines if an action potential is initiated in the postsynaptic neuron?
Every time neurotransmitter is released from the presynaptic neuron it generates an excitatory post synaptic potential(EPSP) in the postsynaptic neuron. When the EPSP is greater than the threshold for excitation an action potential is generated.
What is the sequence of events in the process of synaptic transmission?
Neurons communicate with each other by sending electrical signals across a synapse. In a three neuron loop the series of events that happen in synaptic transmission are as follows: Neuron 1 sends an electrical signal (action potential) down its axon towards the synapse. The action potential causes the release of neurotransmitters (chemicals) from the terminal button of Neuron 1 into the synaptic cleft. The neurotransmitters bind to the receptors of Neuron 2. This binding triggers a new action potential in Neuron 2 which travels down its axon. The action potential causes the release of neurotransmitters (chemicals) from the terminal button of Neuron 2 into the synaptic cleft. The neurotransmitters bind to the receptors of Neuron 3. This binding triggers a new action potential in Neuron 3 which travels down its axon. The action potential causes the release of neurotransmitters (chemicals) from the terminal button of Neuron 3 into the synaptic cleft. The neurotransmitters bind to the receptors of Neuron 1 closing the loop.This series of events is repeated continuously allowing for the communication between neurons in a three neuron loop.
