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Absolute refractory period

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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 happens at the level of the neuron starting with stimulus and ending with a response?

The stimulus is detected by the sensory receptor. The sensory receptor stimulates a sensory neuron. The sensory neuron transmits to the interneuron in the spinal cord. The interneuron stimulates a motor neuron. The motor neuron communicates to the muscle. The muscle(effector) then produces the response allowing the body to respond to the 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 type of stimulus is more important causing action potential give reasons?

It depends on the neuron. Some neurons respond better to a pressure stimulus or temperature, light, sound ect. For example the neurons in the retina of the eye, they respond to photons of light, but do not respond to pressure or sound.


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.


How does a neuron indicate the strength of a stimulus?

A neuron conveys information about the strength of stimuli by varying the rate in which the stimulus is fired.


What neuron picks up a stimulus?

A sensory Neuron picks up the stimulus from the environment and changes it into a nerve impulse.


The period after initial stimulus when I neuron is not sensitive to another stimulus is the?

The period after an initial stimulus when a neuron is not sensitive to another stimulus is called the refractory period. During this time, the neuron is recovering and cannot generate another action potential, which ensures that signals are transmitted in one direction and helps maintain the integrity of the nerve signal. The refractory period can be divided into two phases: the absolute refractory period, where no stimulus can trigger an action potential, and the relative refractory period, where a stronger-than-normal stimulus is required to elicit a response.


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 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


Which neurons decide about the action for a certain stimulus?

Sensory neuron


During the absolute refractory period along an axon membrane of a neuron?

During the absolute refractory period, the neuron is unable to generate another action potential, regardless of the stimulus strength. This is because sodium channels are inactive and unable to open. This period ensures that action potentials are discrete and travel in one direction along the axon.