Which structural feature is characteristic of cardiac muscle cells but not skeletal muscle cells?
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Correct answer: Intercalated discs
Intercalated discs are specialized junctions that connect cardiac muscle cells. They allow mechanical and electrical coupling between cells, enabling coordinated heart contractions.
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More Cardiac Muscle Histology questions
- Cardiac muscle cells typically contain how many nuclei?
- Which junction type within intercalated discs allows rapid electrical communication between cardiac cells?
- Which component of intercalated discs provides strong mechanical attachment between cardiac cells?
- Which feature allows cardiac muscle fibers to appear striated under a microscope?
- Which characteristic distinguishes cardiac muscle from skeletal muscle?
- Which system within cardiac muscle cells helps coordinate contraction by conducting electrical impulses?