4. Tissues & Histology

Which of the following would NOT require the use of skeletal muscle?

Which of the following statements about cardiac muscle and skeletal muscle is true?

Intercalated discs allow cardiac muscle cells to coordinate. Why is this important?

Which of the following movements requires smooth muscle contraction?

Arrector pilli are small muscles located in the connective tissue beneath the skin and are connected to the base of each hair. They are responsible for creating goosebumps when you get cold, an involuntary response to temperature. Based on this information, what type of muscle would you expect the arrector pilli to be?

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.

Tissue that is specialized for contraction is

(a) Epithelial tissue

(b) Muscle tissue

(c) Connective tissue

(d) Nervous tissue

A type of cell junction common in cardiac and smooth muscle tissues is the

(a) Hemidesmosome

(b) Basal junction

(c) Tight junction

(d) Gap junction

List the similarities and differences among the three types of muscle tissue.