Figure 9- 1 Skeletal Muscle Fiber

Multiple Choice

Figure 9- 1 Skeletal Muscle Fiber
Use Figure 9- 1 to answer the following questions:
-Which of the following best describes the term titin?

A) repeating unit of striated myofibrils
B) thin filaments are anchored here
C) protein that accounts for elasticity of resting muscle
D) largely made of myosin molecules
E) storage site for calcium ions