Which of the following is a true statement?
Correct answer: C. Muscle cell has many myofibrils
- A. Muscle cell has many muscle fibers
- B. Muscle fiber has many muscle cells
- C. Muscle cell has many myofibrils
- D. Sarcomere has bundles of muscle fiber
Explanation
Muscle cell has many myofibrils: This statement is true. Within a muscle cell, there are numerous myofibrils. Myofibrils are the contractile elements of muscle cells that consist of repeated units called sarcomeres. They are responsible for muscle contraction.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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