Which muscle type is striated and under voluntary control?

• A. Involuntary Muscle
• B. Voluntary Muscle
• C. Smooth or Non-Striated Muscle
• D. Cardiac Muscle

Answer: (B)

Muscles that are striated and under voluntary control are skeletal muscles. These muscles attach to bones and are consciously contracted to produce movement. The striped appearance comes from the organized pattern of sarcomeres, the unit of actin and myosin, arranged in parallel within the muscle fibers. When you decide to move, nerve impulses from the somatic (voluntary) nervous system trigger these muscles to contract.

In comparison, smooth muscles are non-striated and operate automatically to move substances through hollow organs, so they aren’t under conscious control. Cardiac muscle is striated like skeletal muscle, but it functions automatically to pump the heart and is controlled by the autonomic nervous system, not by voluntary decision.