What is the connective tissue that envelops the whole skeletal muscle?

• Endomysium

• Epimysium

• Sarcoplasm

• Perimysium

What type of muscle fibers are characterized by being multinucleated?

• Cardiac muscle fibers

• None of the above

• Smooth muscle fibers

• Skeletal muscle fibers

Which band in skeletal muscle fibers is known as the A-band?

• Z-line

• Light band

• Dark band

• H-band

What is the primary function of the sarcoplasmic reticulum in muscle fibers?

• Protein synthesis

• Energy storage

• Cell division

• Calcium storage and release

Which type of muscle fiber is known for being resistant to fatigue?

• White fibers

• Red fibers

• Intermediate fibers

• All of the above

What structure connects thick filaments in the center of the A-band?

• M-line

• I-band

• H-band

• Z-line

What is the main characteristic of cardiac muscle fibers?

• They are branched

• They are voluntary

• They are non-striated

• They have multiple nuclei

What type of junctional specialization is most prominent in intercalated discs?

• Nexus

• Zonula adherens

• Gap junctions

• Desmosomes

Which type of muscle fibers can divide?

• Skeletal fibers

• Cardiac fibers

• Smooth fibers

• All muscle fibers

What is the shape of smooth muscle fibers?

• Flat

• Branched

• Spindle-shaped

• Cylindrical