1.

Longest refractory period is observed in(a) Smooth muscle(c) Skeletal muscle(b) Cardiac muscle(d) of these

Answer» <p>The inability of the heart to generate tetanic contractions is the result of thelongabsoluterefractory periodofcardiac muscle, defined as theperiodduring and following an action potential when an excitable membrane cannot be re-excitedoption b</p>


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