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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.
What else can I help you with?
What two events render a sement of an axon temporarily insensitive to another stimulus?
The two events that render a segment of an axon temporarily insensitive to another stimulus are the absolute refractory period and the relative refractory period. During the absolute refractory period, the axon cannot respond to any stimulus regardless of strength, while during the relative refractory period, the axon can only respond to a stronger-than-normal stimulus.
What must occur for the membrane to respond to another stimulus?
For a membrane to respond to another stimulus, it must first return to its resting potential after the previous stimulus has been processed. This involves the repolarization of the membrane, where ion channels reset and the concentration gradients of ions (like sodium and potassium) are restored. Additionally, the refractory period must elapse, during which the membrane is less excitable and cannot respond to new stimuli. Once these conditions are met, the membrane can be ready to respond to subsequent stimuli.
Period when a neuron cannot be restimulated because its sodium gates are open and an AP is being generated?
The period when a neuron cannot be restimulated because its sodium gates are open and an action potential is being generated is called the absolute refractory period. During this time, the neuron is unable to respond to any additional stimuli, regardless of strength or duration, because the sodium channels are inactivated.
What is occurring when a muscle cell cannot be stimulated during the absolute refractory period?
During the absolute refractory period, a muscle cell cannot be stimulated because it is in a state where it is unable to respond to any stimuli, no matter how strong. This period is caused by the inactivation of voltage-gated sodium channels and the inability to generate another action potential until these channels have returned to their resting state.
Which term refers to the period whereby no neural impulse can be generated even with intense stimulation?
The term that refers to this period is the "absolute refractory period." During this time, a neuron cannot generate another action potential, regardless of the strength of the stimulus, because the sodium channels are inactivated. This ensures that action potentials are unidirectional and allows the neuron to recover before firing again.
The neuron cannot respond to a second stimulus no matter how strong?
Absolute 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.
What two events render a sement of an axon temporarily insensitive to another stimulus?
The two events that render a segment of an axon temporarily insensitive to another stimulus are the absolute refractory period and the relative refractory period. During the absolute refractory period, the axon cannot respond to any stimulus regardless of strength, while during the relative refractory period, the axon can only respond to a stronger-than-normal stimulus.
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.
What is the difference between the effective refractory period and the relative refractory period?
-The effective refractory period is the time in which the cell is incapable of responding to a second stimulus between the phases of 0-3.5, while the relative refractory period is the time in which the cell is making preparations to receive stimulus between phase 3.5-4.
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 must occur for the membrane to respond to another stimulus?
For a membrane to respond to another stimulus, it must first return to its resting potential after the previous stimulus has been processed. This involves the repolarization of the membrane, where ion channels reset and the concentration gradients of ions (like sodium and potassium) are restored. Additionally, the refractory period must elapse, during which the membrane is less excitable and cannot respond to new stimuli. Once these conditions are met, the membrane can be ready to respond to subsequent stimuli.
What is correct in response or in respond?
A person can respond but a person cannot "in respond". It requires "in response to".I wanted to respond to my friend's email.In response to my friend's email, I sent him a humorous E-card.
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.
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.
Can you provide an example of a refractory period in the context of human physiology?
In human physiology, a refractory period refers to a brief period of time after a nerve or muscle cell has been activated where it is temporarily unable to respond to another stimulus. An example of this is the refractory period in cardiac muscle cells, where after a heartbeat, there is a brief period where the muscle cell cannot contract again immediately. This helps regulate the heart's rhythm and prevent irregular heartbeats.
