Muscle Tissue Part One Quiz

Which embryological layer do all muscle cells originate from?

• Ectoderm

• Endoderm

• Neural crest

• Mesoderm

What is the primary function of the connective tissue sheaths in skeletal muscle?

• To store energy

• To protect muscle fibers

• To produce ATP

• To generate muscle contractions

What is the role of satellite cells in skeletal muscle?

• To produce ATP

• To aid in repair and regeneration

• To initiate muscle contractions

• To store calcium ions

Where are the multiple nuclei located in skeletal muscle cells?

• At the periphery of the cell

• In the center of the cell

• Scattered throughout the cytoplasm

• In the sarcoplasmic reticulum

What is the basic contractile unit of striated muscle?

• Myofilament

• Sarcolemma

• Sarcomere

• Myofibril

What happens to the sarcomere during muscle contraction?

• It elongates

• It shortens

• It remains the same length

• It disintegrates

Which band in the sarcomere is formed solely by thin filaments?

• A band

• H band

• I band

• M band

Which protein is primarily responsible for linking actin to the sarcolemma?

• Nebulin

• Desmin

• Dystrophin

• Titan

What is the consequence of losing dystrophin in muscle cells?

• Increased muscle strength

• Development of muscular dystrophy

• Enhanced muscle regeneration

• Improved muscle elasticity

What balances the membrane destabilization in skeletal muscle?

• Thicker connective tissue

• Increased ATP production

• Presence of satellite cells

• Higher calcium concentration