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Question
How many types of muscles are there? Which are those types?
Very Long Answer
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Solution
There are 3 types of muscles.
- Skeletal muscle fibres: They are attached to bones and are voluntary. Skeletal muscle fibres are striated and are bundled together in a parallel manner by a sheath of tough connective tissue.
- Smooth muscle fibres: They are present in the walls of internal organs such as blood vessels, stomach, etc., and are involuntary. Smooth muscle fibres are fusiform (taper at both ends) and non-striated. They are held together by cell junctions and are bundled together in a sheath of connective tissue.
- Cardiac muscle fibres: This is the only type of muscle present in the heart. They are contractile and involuntary. Plasma membranes of cardiac cells are fused together by cell junctions, and hence, the cells stick together. Communication junctions present as intercalated discs facilitate the contraction of cardiac cells as a unit.
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