Which is an example of the contractility of muscle?Multiple choice question.A conscious decision to lift your arm and wave at a friendThe passive lengthening of muscleLifting a textbookThe process of exhalation when your muscles recoil back to their original length
Question
Which is an example of the contractility of muscle?Multiple choice question.A conscious decision to lift your arm and wave at a friendThe passive lengthening of muscleLifting a textbookThe process of exhalation when your muscles recoil back to their original length
Solution
The correct answer is "A conscious decision to lift your arm and wave at a friend". This is an example of the contractility of muscle because it involves the active shortening of muscle fibers to produce movement. Contractility refers to the ability of muscle tissue to contract forcefully when stimulated by an action potential. In this case, the brain sends a signal to the muscles in your arm to contract, allowing you to lift your arm and wave.
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