Which feature allows cardiac muscle fibers to appear striated under a microscope?
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Correct answer: Actin and myosin filament pattern
The striated appearance of cardiac muscle results from the organized arrangement of actin and myosin filaments in sarcomeres. These repeating units create alternating light and dark bands.
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More Cardiac Muscle Histology questions
- Which characteristic distinguishes cardiac muscle from skeletal muscle?
- Which system within cardiac muscle cells helps coordinate contraction by conducting electrical impulses?
- Which specialized cardiac cells are responsible for rapid conduction of impulses through the ventricles?
- Which organ contains cardiac muscle tissue?
- Which property of cardiac muscle allows it to contract without nervous stimulation?
- Which cell organelle is especially abundant in cardiac muscle cells due to high energy demand?