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Figure 9- 1 Skeletal Muscle Fiber

Question 43

Multiple Choice

Figure 9- 1 Skeletal Muscle Fiber
Use Figure 9- 1 to answer the following questions:
-What is released from the structure labeled "9"?

A) calcium ions
B) protein
C) sarcoplasm
D) acetylcholinesterase
E) acetylcholine

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