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graded potential are by definition VARIABLE in strength, and therefore NOT all or none. They start out at their strongest strength, and degrade (become weaker) as they progress further along.
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∙ 11y ago
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Dendrites conduct both graded and action potential?
no, dendrites and cell bodies can only have graded potential. action potential only occurs in axons
What can occur when the effects of one graded potential are added onto the effects produced by another graded potential which can lead to an action potential?
More sodium ions pile up (accumulate) at the axon hillock from the combination of the two (or more) graded potentials, which may be then be sufficient to initiate the action potential.
How does an action potential differ from a graded potential?
Action potentials also known as spikes, differ from graded potentials in that they do not diminish in strength as they travel through the neuron.
What parts of a neuron is capable of generating a graded potential?
The dendrites portion of a neuron will generate a potential.
Is an action potential is a phenomenon that either happens completely or doesn't happen at all?
The action potential is an all-or-none phenomenon.
Are graded potentials the same as local potentials?
Postsynaptic potentials are changes in the membrane potential of the postsynaptic terminal of a chemical synapse. Graded potentials are changes in membrane potential that vary in size, as opposed to being all-or-none, and are not postsynaptic potentials.
Why does the frog sciatic nerve give a graded response?
The frog schiatic nerve gives a graded response because the nerve is a bundle of axons and not a single axon (thus it does not show the all or none response of an axon-either generating an action potential or not). If one axon is generating an action potential then a small nerve impulse is witnessed, if all axons are simultaneously generating action potentials then a large nerve impulse is witnessed. Thus the nerve impulse is graded (it can be none, small, medium, large, larger, maximal).
Dendrites conduct both graded and action potential?
no, dendrites and cell bodies can only have graded potential. action potential only occurs in axons
Is a postsynaptic potential a graded potential that is the result if a neurotransmitter released into the synapse between two neurons?
Yes it is true that graded potential can be called postsynaptic potentials. When a sensory neuron is excited by some form of energy, the resulting graded potential is called generator potential.
What can occur when the effects of one graded potential are added onto the effects produced by another graded potential which can lead to an action potential.?
More sodium ions pile up (accumulate) at the axon hillock from the combination of the two (or more) graded potentials, which may be then be sufficient to initiate the action potential.
What can occur when the effects of one graded potential are added onto the effects produced by another graded potential which can lead to an action potential?
More sodium ions pile up (accumulate) at the axon hillock from the combination of the two (or more) graded potentials, which may be then be sufficient to initiate the action potential.
How does graded potential occur?
Graded potential occurs when triggered by a stimulus and gated ion channels open these gated channels can either be chemically gated or mechanically gated. In order to have graded potential threshold must be met in order to generate action potential. Good day!
How does an action potential differ from a graded potential?
Action potentials also known as spikes, differ from graded potentials in that they do not diminish in strength as they travel through the neuron.
When a sensory neuron is excited by some of energy the resulting graded potential is called?
Receptor potential or generator potential.
When a sensory neuron is excited by some energy the resulting graded potential is called?
Receptor potential or generator potential.
What parts of a neuron is capable of generating a graded potential?
The dendrites portion of a neuron will generate a potential.
Is an action potential is a phenomenon that either happens completely or doesn't happen at all?
The action potential is an all-or-none phenomenon.
