Answered

4. How does cardiac muscle differ from skeletal muscle?

A. It is organized into sarcomeres.
B. Its fibers are not connected to each other.
C. It is striated.
D. Its fibers are shorter.



Answer :

GinnyAnswer

Final answer:

Cardiac muscle differs from skeletal muscle in terms of striation, intercalated discs, and fiber length.


Explanation:

Cardiac muscle differs from skeletal muscle in several ways:

  1. Like skeletal muscle, cardiac muscle is striated due to its filament arrangement in sarcomeres.
  2. Cardiac muscle fibers are extensively branched and connected by intercalated discs, enabling coordinated contractions in the heart.
  3. Cardiac muscle fibers are shorter than skeletal muscle, contain one nucleus, and are rich in mitochondria for ATP production through aerobic metabolism.

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