Which feature is absent from cardiac muscles?
Correct answer: B. Multinucleate cells
- A. Intercalated disc
- B. Multinucleate cells
- C. Light and dark bands
- D. Contractile sarcomere
Explanation
Cardiac muscle: It is a contractile tissue present in the heart. The muscle fibres are cylindrical, branched and uninucleate. The branches join to form a network called as intercalated disc which are unique distinguishing features of the cardiac muscles.
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About Muscles
Muscles covers skeletal, smooth and cardiac muscle, their microscopic structure and the roles of tendons, myofibrils, actin and myosin. It explains the sliding filament mechanism, sarcomere shortening, neuromuscular transmission and calcium regulation, while distinguishing voluntary skeletal movement from involuntary contraction in smooth and cardiac muscle.
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