9. Muscle Tissue

Identify the structures in the following figure.

a. ___

b. ___

c. ___

d. ___

e. ___

f. ___

g. ___

h. ___

An action potential can travel quickly from one cardiac muscle cell to another because of the presence of

(a) Gap junctions

(b) Tight junctions

(c) Intercalated discs

(d) Both a and c

Compare skeletal, smooth, and cardiac muscles in regard to their microscopic anatomy, location and arrangement in body organs, and function in the body.

Compartment syndrome can result from all of the following except

(a) Compressing a nerve in the wrist

(b) Compartments swelling with blood due to an injury involving blood vessels

(c) Torn ligaments in a given compartment

(d) Pulled tendons in the muscles of a given compartment

(e) Torn muscles in a particular compartment

The connective tissue covering that encloses the sarcolemma of an individual muscle fiber is called the:

a. Epimysium

b. Perimysium

c. Endomysium

d. Periosteum

The plasma membrane of a muscle fiber is called the ____________ and it wraps bundles of ____________. 

Which of the following types of muscle fibers have low myosin ATPase activity and are classified as slow-twitch?

a. Type I fibers

b. Type IIa fibers

c. Type IIx fibers

d. Type III fibers