All of the following features are unique to cardiac muscle cells except?
Correct answer: D. They are non-striated.
- A. They are linked together via intercalated discs.
- B. There are gap junctions between cells.
- C. They form branching chains.
- D. They are non-striated.
Explanation
Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissue, with the other two being skeletal muscle and smooth muscle. It is involuntary, striated muscle that constitutes the main tissue of the wall of the heart.\
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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