Question

Define Refractory Period and its types? What is its mechanism? Give
lute Refractory Period of skeletal muscle?​

Answer 1

✒$\sf\large\red{\underline \bold{Question}}</h2><h2>$

Define Refractory Period and its types? What is its mechanism? Give

Define Refractory Period and its types? What is its mechanism? Givelute Refractory Period of skeletal muscle?

★ $\sf\small\purple{\underline \bold{ANSWER}}</h2><h2>$ ★

$\sf\small\red{\underline \bold{Refractory Period}}$

It can be said that the Refractory Period is the period of time during which an organ or a cell can’t repeat a certain action.

It is the amount of time it takes for an excitable membrane to be ready for a second stimulus, after it returns to its resting state, that was followed by an excitation.

A new action potential cannot occur in an excitable fiber as long as the membrane is still hyperpolarized from the previous action potential.

✎$\sf\small\red{\underline \bold{Types \ are}}</h3><h3>$

1. Absolute:

Is the period of time during which a second action potential ABSOLUTELY cannot be initiated, no matter how large the applied stimulus is.

2.Relative:

Is the interval immediately following the Absolute Refractory Period during which initiation of a second action potential is INHIBITED, but not impossible.

✎$\sf\small\red{\underline \bold{Lute \ Refractory \ Period}}</h3><h3>$

$\sf\small\red{\underline \bold{</h3><h3>Of \ Skeletal \ Muscle?}}</h3><h3>$

refractory period is quite short (1-2 ms ) , it usually coincides with the depolarization phase of the action potential . ... Absolute refractory period : is a period during which the cardiac excitability is totally cancelled ( cardiac muscle will not respond to any stimulus)

Answer 2

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The time interval, after a muscle fiber has been stimulated and a contraction has been achieved, which has to pass before the muscle cell can be stimulated to contract again; it is prolonged in cardiac muscle.

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