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Excitation Contraction Coupling

What will hap...

Question

What will happen to a muscle fibre when it is constantly acted upon by stimuli?

A

The muscle stops contracting

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B

Tetanic contraction

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C

The duration of response decreases

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D

None of the above

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Solution

The correct option is B Tetanic contraction
If the stimuli for contraction reach a muscle at a high rate, the muscle would have no time to relax; the contractions would overlap and the muscle as a result would continuously twitch or contract. This is called tetanic twitch or tetanic contraction.

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Excitation Contraction Coupling

Standard XII Biology

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