BIO NMDCAT Muscles

nmdcat.online July 28, 2026

Compared with skeletal muscle fibers, cardiac muscle fibers are unique because they are:

A. Multinucleated and cylindrical

B. Branched and interconnected

✓

C. Spindle-shaped and non-striated

D. Long and unbranched

📝 Explanation

Correct: Cardiac muscle fibers branch and connect through intercalated discs. A & D: Describe skeletal muscle. C: Describes smooth muscle. Concept: Structural comparison of muscle tissues.

📖 Additional Information

Multinucleated and cylindrical
Branched and interconnected
Spindle-shaped and non-striated
Long and unbranched

Correct: Cardiac muscle fibers branch and connect through intercalated discs. A & D: Describe skeletal muscle. C: Describes smooth muscle. Concept: Structural comparison of muscle tissues.

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