Asynchronous Flight Muscles in Insects Are Able to Achieve Contractions

question 17

Multiple Choice

Asynchronous flight muscles in insects are able to achieve contractions in the range of 250-1000 Hz because

• A)they have very fast Ca²⁺ ATPase pumps.
• B)they have muscles that don't depend on Ca²⁺ regulation at all.
• C)they have very high amounts of parvalbumin in the cytosol.
• D)the TnC can rapidly change its affinity for Ca²⁺,leading to rapid contraction/relaxation cycles.

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