Which of the three muscle cell types has multiple nuclei?

During an intense running session, you pull a leg muscle. Which type of muscle did you injure?

Striations are a feature shared by skeletal and cardiac muscle, but they are not present in smooth muscle. Based on what you know about the functions of these three types of muscle, what do you think the presence of striations indicates about the muscle it is found in?

Which of the following statements about muscle tissue is false?

a. Smooth muscle tissue is involuntary, and the cells are nonstriated.

b. Cardiac muscle tissue is involuntary, and the cells are striated.

c. Skeletal muscle fibers are joined by intercalated discs.

d. Skeletal muscle fibers are long and cylindrical striated cells.