Which finding best distinguishes cardiac muscle from skeletal muscle?
Correct answer: C. It is striated and contains intercalated discs
- A. It is striated and usually voluntary
- B. It is non-striated and found in hollow organs
- C. It is striated and contains intercalated discs
- D. It is attached to bones and has multiple nuclei
Explanation
Cardiac muscle is striated, involuntary and contains intercalated discs that help cardiac cells contract together. Skeletal muscle is also striated but is usually voluntary and attached to bones. Smooth muscle is non-striated and is found in the walls of hollow organs.
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About Skeletal and Muscular Systems
The skeletal and muscular systems include bone structure, joints, cartilage, the axial and appendicular skeleton, and the roles of ligaments and tendons. They also cover skeletal muscle organization, the sliding filament mechanism, neuromuscular contraction, and common differences between voluntary skeletal muscle, cardiac muscle and smooth muscle.
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