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Question
Smooth muscles are______.
Smooth muscles are______.
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Solution
The correct option is A Involuntary, spindle shaped, uninucleated, tapering
Smooth muscles are involuntary muscles. Each muscle fibre is a long, narrow, spindle shaped tapering cell. The cell is uninucleate. Delicate threads called myofibrils run longitudinally through the cell. These muscles are found in the walls of the alimentary canal, and internal organs. Unstriated muscles cause slow and prolonged contractions, which are involuntary i.e. not under the control of our will. In the alimentary canal they cause movement of the food and in the blood vessels they help the blood to flow.
Involuntary, spindle shaped, uninucleated, tapering
Smooth muscles are involuntary muscles. Each muscle fibre is a long, narrow, spindle shaped tapering cell. The cell is uninucleate. Delicate threads called myofibrils run longitudinally through the cell. These muscles are found in the walls of the alimentary canal, and internal organs. Unstriated muscles cause slow and prolonged contractions, which are involuntary i.e. not under the control of our will. In the alimentary canal they cause movement of the food and in the blood vessels they help the blood to flow.
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