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They are triggered by a depolarization that reaches the threshold
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∙ 13y ago
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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
The cells of the retina in which action potentials are generated are the?
ganglion cells
What is the electrical message that travels along a neuron?
electrical signal
What is a tiny branching thread-like structure found in neurons?
There are two possible answers - axons or dendrites. Axons carry action potentials away from the neuron, while dendrites receive action potentials.
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
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
The cells of the retina in which action potentials are generated are the?
ganglion cells
