Anatomy of Skeletal Muscle Cells

What is the primary function of tendons in muscle structure?

• To store energy

• To produce red blood cells

• To attach muscle to bone

• To generate force

Which connective tissue layer covers the entire muscle?

• Perimysium

• Endomysium

• Epimysium

• Sarcolemma

What is the name of the connective tissue that surrounds individual muscle cells?

• Epimysium

• Perimysium

• Endomysium

• Sarcolemma

What is another name for a muscle cell?

• Titin

• Myofibril

• Sarcomere

• Myofiber

What is the function of the sarcolemma?

• To cover the muscle cell

• To produce myosin

• To store calcium

• To generate ATP

What are the striations seen in skeletal muscle under a microscope called?

• Z-lines

• I-bands

• T-tubules

• A-bands

What is the basic unit of contraction in a muscle called?

• Myofibril

• Sarcomere

• Titin

• Myofiber

Which protein filament is anchored to the Z-line in a sarcomere?

• Titin

• Actin

• Troponin

• Myosin

What role does calcium play in muscle contraction?

• It binds to myosin

• It binds to troponin

• It binds to actin

• It binds to titin

What happens to the I-band during muscle contraction?

• It disappears

• It gets smaller

• It stays the same

• It gets larger