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What is most related to saltatory conduction dendrites or choroid plexus or nodes or ranvier or astrocytes?
Nodes of Ranvier are most related to saltatory conduction. These are gaps in the myelin sheath along the axon where action potentials are regenerated, allowing for faster conduction of electrical impulses. Saltatory conduction is the rapid jumping of action potentials between these nodes in myelinated neurons.
Where do most action potentials originate?
Action potentials most commonly originate in the axon hillock of a neuron, which is located near the cell body. This region has a high density of voltage-gated ion channels that are responsible for generating and propagating the action potential down the axon.
Why are most action potentials generated in response to a long stimulus that is above threshold?
Action potentials are generated in response to a long stimulus above threshold because it allows for the full development of the depolarization phase. This prolonged depolarization leads to the activation of voltage-gated sodium channels, triggering the rapid influx of sodium ions and initiating the action potential. A sustained stimulus ensures that the membrane potential remains above threshold for a sufficient time to generate an action potential.
Where do action potentials occur?
Action potentials occur along the axon of a neuron, where the electrical signals are transmitted from the cell body to the axon terminals. The action potential is initiated at the axon hillock and propagates down the axon to trigger the release of neurotransmitters at the synapse.
What is a tonic current?
Not all the electrical signalling in the nervous system is by way of action potentials, or impulses. Indeed it could be argued that some of the most important, if not the most important, of the central nervous system's communications depend upon non-impulse signalling. These signals, which are at least one order of magnitude and sometimes two or more orders of magnitude, weaker than action potentials have been termed electrotonic potentials. They are small depolarisations of a nerve process's membrane and are caused by the essentially passive spread of electrical current through the conducting fluids inside and outside nerve cells and their processes. Nonetheless, however small electrotonic potentials may be, they can have very considerable effect on the physiology of neuronal membranes and thus on the large-scale functioning of the brain. cited from - Elements of Molecular Neurobiology 3rd ed C. U. M. Smith
What are the most rapid action potentials conducted on?
thick myelinated axons
What is most related to saltatory conduction dendrites or choroid plexus or nodes or ranvier or astrocytes?
Nodes of Ranvier are most related to saltatory conduction. These are gaps in the myelin sheath along the axon where action potentials are regenerated, allowing for faster conduction of electrical impulses. Saltatory conduction is the rapid jumping of action potentials between these nodes in myelinated neurons.
What is the route that results in the most rapid action of a drug?
Injection tends to lead to the most rapid action of drugs.
Where do most action potentials originate?
Action potentials most commonly originate in the axon hillock of a neuron, which is located near the cell body. This region has a high density of voltage-gated ion channels that are responsible for generating and propagating the action potential down the axon.
Why are most action potentials generated in response to a long stimulus that is above threshold?
Action potentials are generated in response to a long stimulus above threshold because it allows for the full development of the depolarization phase. This prolonged depolarization leads to the activation of voltage-gated sodium channels, triggering the rapid influx of sodium ions and initiating the action potential. A sustained stimulus ensures that the membrane potential remains above threshold for a sufficient time to generate an action potential.
Where does an action potential start?
Action potentials are generated on a part of the neuron called the 'axon hillock' - the proximal most portion of the axon.
Is the Nernst potential of Sodium achieved during the action potential?
the Nernst potential of Sodium is +60mV. most action potentials do not reach +60mV at peak depoloarization. http://openwetware.org/images/thumb/a/a6/Action-potential.jpg/300px-Action-potential.jpg.png
Where do most local potentials happen?
Local potentials typically occur in the dendrites and cell body of a neuron. They involve small changes in membrane potential that do not reach the threshold for generating an action potential. These local changes in potential allow for signal integration and processing in the neuron.
What fibers are the most rapid nerve impulses conducted on?
These are nerves in animals. They include central and peripheral; peripheral include somatic and autonomic.
Where do action potentials occur?
Action potentials occur along the axon of a neuron, where the electrical signals are transmitted from the cell body to the axon terminals. The action potential is initiated at the axon hillock and propagates down the axon to trigger the release of neurotransmitters at the synapse.
What is the Comparative and superlative of rapid?
more rapid, most rapid
What is the comparative and superlative degree of rapid?
more rapid, most rapid
