Which Statement About the Structure of Skeletal Muscle Is True

question 20

Multiple Choice

Which statement about the structure of skeletal muscle is true?

• A) The light bands of the sarcomere are the regions where actin and myosin filaments overlap.
• B) When a muscle contracts, the A bands of the sarcomere lengthen.
• C) The myosin filaments are anchored in the Z lines.
• D) When a muscle contracts, the H zone of the sarcomere shortens.
• E) The sarcoplasm of the muscle cell is contained within the sarcoplasmic reticulum.