Which one of the following muscles is considered as "Voluntary muscle"?
Correct answer: C. Skeletal muscles
- A. Smooth muscles
- B. Cardiac muscles
- C. Skeletal muscles
- D. Glandular muscles
Explanation
Muscles in the body are categorized into three main types: Smooth, Cardiac, and Skeletal. Skeletal muscles are classified as voluntary muscles because they are consciously controlled, allowing us to perform actions such as walking, lifting, and speaking. This contrasts with Smooth and Cardiac muscles, which are involuntary. Smooth muscles operate automatically within organs, and Cardiac muscles function independently in the heart's rhythmic contractions. Therefore, the correct answer is Option C: Skeletal muscles.
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About Muscles
Muscles covers skeletal, smooth and cardiac muscle, their microscopic structure and the roles of tendons, myofibrils, actin and myosin. It explains the sliding filament mechanism, sarcomere shortening, neuromuscular transmission and calcium regulation, while distinguishing voluntary skeletal movement from involuntary contraction in smooth and cardiac muscle.
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