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Striated (skeletal) Muscle
- Striations caused by overlapping actin and myosin filaments.
- Major body muscle contractions involved in locomotion and facial expressions
- Heat production
All major body muscles
- Striated appearance
- Branched fibres
- Intercalated discs (these appear as occasional dark lines)
- Single nucleus per cell
Heart muscle contraction. Propels blood into circulation (involuntary contractions)
Walls of heart.
- Long thin cells with tapering ends
- Single nucleus
- No striations
Involuntary Muscle contraction
Walls of digestive tract, respiratory tract, blood vessels.