Figure 7-1 Structural Components of a Skeletal Muscle Fiber

question 35

Multiple Choice

Figure 7-1 Structural Components of a Skeletal Muscle Fiber
Use Figure 7-1 to identify the labeled part.
-The triad, seen as structure D, is composed of

• A) the T tubules and the myofibrils.
• B) actin and myosin.
• C) troponin and tropomyosin.
• D) the cisterna of the sarcoplasmic reticulum along with the T tubules.
• E) the cisterna of the sarcoplasmic reticulum and the myofilaments.

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