Question:medium
Which of the following is true about cardiac muscle?
Which of the following is true about cardiac muscle?
Show Hint
Recall where the nucleus sits in a cardiac myocyte versus a skeletal fibre.
Updated On: Jun 24, 2026
- Spindle shaped
- Large central nucleus
- No gap junctions
- Arranged in sheets
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: To pick the true statement, recall the histology of the three muscle types and compare.
Step 2: A centrally located nucleus is a hallmark of cardiac muscle. In skeletal muscle the multiple nuclei sit peripherally, whereas the single central nucleus belongs to the cardiac myocyte, validating that choice.
Step 3: The remaining options describe other tissues or are factually incorrect. Spindle shape is a smooth muscle trait, intercalated discs of cardiac muscle are packed with gap junctions for syncytial conduction, and cardiac fibres form a branching network instead of sheets.
Step 4: Only the central nucleus statement survives scrutiny.
\[\boxed{\text{Large central nucleus}}\]
Step 2: A centrally located nucleus is a hallmark of cardiac muscle. In skeletal muscle the multiple nuclei sit peripherally, whereas the single central nucleus belongs to the cardiac myocyte, validating that choice.
Step 3: The remaining options describe other tissues or are factually incorrect. Spindle shape is a smooth muscle trait, intercalated discs of cardiac muscle are packed with gap junctions for syncytial conduction, and cardiac fibres form a branching network instead of sheets.
Step 4: Only the central nucleus statement survives scrutiny.
\[\boxed{\text{Large central nucleus}}\]
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