Figure 10-2 Muscle Contractions

question 110

Multiple Choice

Figure 10-2 Muscle Contractions

Use Figure 10-2 to answer the following questions:
-What is thought to happen in a muscle during the response shown in graph (a) ?

• A) It is strengthening with exercise.
• B) There is a gradual increase in calcium ion concentration in the sarcoplasm.
• C) It is fatigued and must make repeated efforts to twitch normally.
• D) It is aged and has lost contractile proteins.
• E) It is producing more ATP as tension increases.

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