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nmdcat.online July 28, 2026

A patient loses conscious control of limb movement but heartbeat and intestinal movements continue normally. This observation indicates that cardiac and smooth muscles are primarily:

A. Voluntary tissues
B. Under involuntary control
✓
C. Controlled only by the spinal cord
D. Dependent on skeletal muscles

📝 Explanation

Correct: Cardiac and smooth muscles function without conscious control. A: Only skeletal muscle is voluntary. C & D: These statements are incorrect. Concept: Voluntary vs. involuntary muscle control.

📖 Additional Information

  • Voluntary tissues
  • Under involuntary control
  • Controlled only by the spinal cord
  • Dependent on skeletal muscles

Correct: Cardiac and smooth muscles function without conscious control. A: Only skeletal muscle is voluntary. C & D: These statements are incorrect. Concept: Voluntary vs. involuntary muscle control.

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