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it the period when an action potential cannot be elicited in an excitable cell(neuron,muscle cell etc.) after it has been excited.
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∙ 14y ago
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How long is absolute refractory period for skeletal muscles?
The refractory period generally lasts one millisecond
Is the neuron ready to fire during the refractory period?
Refractory period
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.
A period after an initial stimulus when a neuron is not sensitive to another stimulus is the?
After the generation and propagation of an action potential along a neuron, the cell becomes depolarized to the point where there is no potential for further signaling until the cell re-polarizes through the action of ion pumps. This very brief period is called the refractory state.
Why impossible for myocardium to go into tetany?
Muscle tetany occurs in muscles without absolute refractory period. The stimulus for contraction comes before the preceding contraction/relaxation is over leading to multiple action potentials without a refractory period. It does not occur in cardiac muscle because it has absolute refractory period during which the muscle cannot be excited, thus making tetany impossible
When a muscle is unable to respond to stimuli temporarily which period is it in?
The refractory period is when a muscle is temporary unable to respond to stimuli refractory period
What period is a muscle is unable to respond to stimuli temporarily?
The refractory period is when a muscle is temporary unable to respond to stimuli refractory period
Define the period of repolarization when only a strong stimulus will elicit an action potential?
Relative refractory period
Which term referes to the period whereby no impulse can be generated even with intense stimulation?
Absolute refactory period
What is the cause of the relative refractory period?
The Refractory period is when a second action potential is possible, but unlikely; second action potential only if the stimulus is sufficiently strong. The refractory period helps to prevent backflow of Sodium.
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.
Why cardiac muscles do not fatigue easily?
blc cardiac muscles ve long refractory factor
