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Called an interspike interval
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∙ 11y ago
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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.
Where do most action potentials originate?
initial segment
Can action potentials be summated?
no but generator potential can be summated
What do resting and action potentials depend on?
The resting and action potentials depend on the balance of charges of the area outside the neuron and inside the neuron. A resting potential is when the neuron is more negatively (approximately -70mv) charged than the area outside the neuron. The action potential occurs when sodium ions rush into the neuron, causing the polarity to be reversed. When there is no difference in charge between the area inside the neuron and the area outside the neuron, no action potentials can be started by that neuron.
Why do not action potentials occur during the repolarization phase?
It has to do with what types of channels are open during this phase. In the repolarization phase the number of potassium channels are increased and the number of sodium channels are decreased. This allows for action potentials to not occur. Otherwise, the action potentials would add up and produce tetany.
Do action potentials become weaker with distance?
action potentials are non-decremental and do not get weaker with distance.
What do intercalated discs transfer from cell to cell?
action potentials, ionic currents, the force of contraction and ionic currents and action potentials only
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.
Communication in the nervous system depends on?
action potentials
Does nervous tissue generate action potentials?
Yes.
A nerve impulse consists of a wave of?
Action Potentials
Where do most action potentials originate?
initial segment
Can action potentials be summated?
no but generator potential can be summated
What do resting and action potentials depend on?
The resting and action potentials depend on the balance of charges of the area outside the neuron and inside the neuron. A resting potential is when the neuron is more negatively (approximately -70mv) charged than the area outside the neuron. The action potential occurs when sodium ions rush into the neuron, causing the polarity to be reversed. When there is no difference in charge between the area inside the neuron and the area outside the neuron, no action potentials can be started by that neuron.
Why do not action potentials occur during the repolarization phase?
It has to do with what types of channels are open during this phase. In the repolarization phase the number of potassium channels are increased and the number of sodium channels are decreased. This allows for action potentials to not occur. Otherwise, the action potentials would add up and produce tetany.
A neuron will generate action potentials when it?
A neuron will generate action potential when it is stimulated by a neurotransmitter.
Where do action potentials associated with heartbeat regulation originate?
the action potentials associated with heartbeat regulation originate in the SA node, I believe it is in somewhere in the wall of the right atrium of the heart
