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What is the relationship between the absolute and relative refractory periods during the action potential process?
During the action potential process, the absolute refractory period is when the neuron cannot respond to any stimulus, while the relative refractory period is when it can respond to a stronger stimulus. The absolute refractory period comes before the relative refractory period in the action potential process.
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What is the relationship between the relative refractory period and the absolute refractory period in terms of neuronal excitability?
The relative refractory period is the time when a neuron can respond to a stronger stimulus, while the absolute refractory period is when a neuron cannot respond at all. The relative refractory period follows the absolute refractory period and allows for increased neuronal excitability.
What is the relationship between the absolute and relative refractory periods in the context of neuronal excitability?
The absolute refractory period is the time when a neuron cannot generate another action potential, regardless of the stimulus strength. The relative refractory period is the time when a neuron can generate another action potential, but only with a stronger stimulus. These periods help regulate neuronal excitability by ensuring that neurons fire in a controlled manner and prevent excessive firing.
During which period can a second action potential be initiated by a larger than normal stimulus?
The period following the absolute refractory period is where a second action potential can be initiated by a larger than normal stimulus. This phase is known as the relative refractory period.
What is the difference between the absolute refractory period and the relative refractory period in terms of neuronal excitability?
The absolute refractory period is a time when a neuron cannot respond to any stimulus, no matter how strong. The relative refractory period is a time when a neuron can respond to a stronger stimulus than usual.
When can a second nerve impulse cannot be generated?
The generation of a second action in some neurons can only happen after a refractory period, when the membrane potential has returned it's base level or even more negative. This is because some types of Na+ channels inactivate at a positive potential and then require a negative potential to reset. Other neurons have other types of channels and can fire multiple action potentials to a single depolarization.
2 Define refractory period and differentiate between absolute and relative refractory periods?
refractory period is the interval between action potential , the absolute refractory period is the period in which second action potential can not be initiated but in relative refractory period the second action potential can be initiated by the more strong stimulus.
What is the relationship between the relative refractory period and the absolute refractory period in terms of neuronal excitability?
The relative refractory period is the time when a neuron can respond to a stronger stimulus, while the absolute refractory period is when a neuron cannot respond at all. The relative refractory period follows the absolute refractory period and allows for increased neuronal excitability.
What is the relationship between the absolute and relative refractory periods in the context of neuronal excitability?
The absolute refractory period is the time when a neuron cannot generate another action potential, regardless of the stimulus strength. The relative refractory period is the time when a neuron can generate another action potential, but only with a stronger stimulus. These periods help regulate neuronal excitability by ensuring that neurons fire in a controlled manner and prevent excessive firing.
During which period can a second action potential be initiated by a larger than normal stimulus?
The period following the absolute refractory period is where a second action potential can be initiated by a larger than normal stimulus. This phase is known as the relative refractory period.
What is the absolute refractory period?
Absolute Refractory Period:It is the interval during which a second action potential absolutely cannot be initiated, no matter how large a stimulus is applied.ORAfter repolarization there is a period during which a second action potential cannot be initiated, no matter how large a stimulus current is applied to the neuron. This is called the absolute refractory period, and it is followed by a relative refractory period, during which another action potential can be generated
Absolute refractory period relative refractory period?
In absolute refractory period, none of channels are reconfigured, so that second active potential cannot be generated no matter how large the stimulus current is applied to the neuron. In contrast, in relative refractory period, some but not all of channels are reconfigured, another action potential can be generated but only by a greater stimulus current thatn that originally needed.
What is the difference between the absolute refractory period and the relative refractory period in terms of neuronal excitability?
The absolute refractory period is a time when a neuron cannot respond to any stimulus, no matter how strong. The relative refractory period is a time when a neuron can respond to a stronger stimulus than usual.
What is relative refactory period?
The relative refractory period is the phase of the cardiac action potential during which a stronger-than-usual stimulus is required to elicit another action potential. It occurs immediately following the absolute refractory period and allows for the heart muscle to be able to respond to a second, stronger stimulus after the initial action potential.
During the absolute refractory period an impulse may be triggered by a stimulus of high intensity?
During the absolute refractory period, the neuron is incapable of generating another action potential regardless of the stimulus intensity, as the voltage-gated sodium channels are inactivated. Once these channels have reset during the relative refractory period, a strong enough stimulus can trigger an action potential again.
When do you use relative refractory period?
The relative refractory period is the time during which the generation of an action potential is impossible no matter the strength of the stimulus
Define the period of repolarization when only a strong stimulus will elicit an action potential?
The period of relative refractory period is the time after an action potential during which a strong stimulus is required to generate a new action potential. This is because the membrane potential is hyperpolarized, making it more difficult to reach the threshold for firing another action potential.
Period of reploarization of the neuron during which it cannot respond to a second stimulus?
The absolute refractory period. This period occurs after the action potential has been initiated and is a result of inactivation of the sodium channels. These sodium channels would normally open up to allow sodium influx into the cell during an action potential. The absolute refractory period occurs during an ongoing action potential and is the period in which a subsequent action potential absolutely cannot be generated.This should not be confused with the relative refractory period which occurs immediately following the absolute refractory period (during membrane hyperpolarization). During this period a subsequent action potential is possible, but more difficult to attain.
