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Question

Smooth muscle fibres are

A
fusiform in shape and multinucleated
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B
cylindrical in shape and uninucleated
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C
cylindrical in shape and multinucleated
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D
fusiform in shape and uninucleated
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Solution

The correct option is D fusiform in shape and uninucleated
Smooth muscles are found in the wall of alimentary canal and also blood vessels. Smooth muscles are composed of smooth muscle fibres. The fibres are fusiform in shape as they are broad in middle and tapering at ends. Each smooth muscle fibre has a single nucleus in the centre (uninucleated).

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