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BIO NMDCAT Muscles
nmdcat.online July 28, 2026

During a laboratory investigation, a muscle sample shows branched fibers with a single central nucleus and intercalated discs. The tissue is identified as:

A. Smooth muscle
B. Skeletal muscle
C. Cardiac muscle
✓
D. Dense connective tissue

📝 Explanation

Correct: Branched fibers and intercalated discs are unique features of cardiac muscle. A: Smooth muscle is non-striated and spindle-shaped. B: Skeletal muscle is unbranched and multinucleated. D: Dense connective tissue lacks muscle fibers. Concept: Histological identification of muscle types.

📖 Additional Information

  • Smooth muscle
  • Skeletal muscle
  • Cardiac muscle
  • Dense connective tissue

Correct: Branched fibers and intercalated discs are unique features of cardiac muscle. A: Smooth muscle is non-striated and spindle-shaped. B: Skeletal muscle is unbranched and multinucleated. D: Dense connective tissue lacks muscle fibers. Concept: Histological identification of muscle types.

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