MCQ
Smooth muscles are
- ✓involuntary, fusiform, nonstriated
- Bvoluntary, multinucleate, cylindrical
- Cinvoluntary, cylindrical, striated
- Dvoluntary, spindleshaped, uninucleate.
✓
Answer
Correct option: A.
involuntary, fusiform, nonstriated
a
(a) : Smooth muscle fibres are elongated and spindle shaped (fusiform). Each fibre contains a single oval nucleus surrounded by cytoplasm (sarcoplasm). In cytoplasm myofibrils are arranged longitudinally. These fibres lack striations and sarcolemma, however are enclosed by plasma membrane.
(a) : Smooth muscle fibres are elongated and spindle shaped (fusiform). Each fibre contains a single oval nucleus surrounded by cytoplasm (sarcoplasm). In cytoplasm myofibrils are arranged longitudinally. These fibres lack striations and sarcolemma, however are enclosed by plasma membrane.
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