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Is an action potential is a phenomenon that either happens completely or doesn't happen at all?
Wiki User
∙ 14y ago
The action potential is an all-or-none phenomenon.
Wiki User
∙ 14y ago
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What happens in the neurolemma as the result of an action potential?
It provides insulation to the axons and dendrites during depolarization or action potential.
What happens when a neuron becomes excitable?
A neuron which is excitable is in its RESTING STATE, which means that it is POLARIZED, and thus able to be stimulated into an action potential.
The action potential is generated when a stimulus?
When a stimulus stimulates a neuron above the threshold, the action potential is generated.
What transmission of the depolarization wave along the neurons membrane?
Action potential
Do axons carry action potentials away from the cell body?
The areas that have had the action potential are refractory to a new action potential.
What happens in the neurolemma as the result of an action potential?
It provides insulation to the axons and dendrites during depolarization or action potential.
What happens to the heart when an action potential is generated in the SA node?
it contracts
When substance is dipped in water the air comes out how it happens and what is the principle behind it?
Phenomenon of Capilary action or science of matter
What happens in the heart when an action potential is generated in the SA node?
Myocardial contraction
When you touch something hot a neuron in you finger senses the temperature which happens first?
an action forms
What happens when a neuron becomes excitable?
A neuron which is excitable is in its RESTING STATE, which means that it is POLARIZED, and thus able to be stimulated into an action potential.
What happens to the size of an action potential as it continues down the axon?
I belive the size of the axon potential remains constant at a depolarisation of +40 mv and a resting potential of -70mv for most nerves. The frenquency of action potentials is the factor that determines the strength of the nerve impulse.
An action potential either fires completely or not at all. this is know as?
"all-or-none principle." In this principle, once the threshold for firing an action potential is reached, it will occur at full strength regardless of the strength of the stimulus that triggered it.
When you touch something hot a neuron in your senses the temperature. which happens first?
an action potential moves along the neuron
What was the effect of curare on eliciting an action potential?
It creates an action potential
An electrical impulse moving down an axon is called?
This is called action potential. Action potential is the change in electrical potential that occurs between the inside and outside of a nerve or muscle fiber when it is stimulated, serving to transmit nerve signals.
When you touch something hot, a neuron in your finger senses the temperature. Which happens first?
an action potential moves along the neuron
