Across
- 2. Tiny muscle fibres
- 3. Forms fibrous strand around actin filament
- 4. Lighter-coloured region where myosin and actin don't overlap
- 6. Fibres that have quicker, stronger but shorter lasting effects
- 8. The distance between two adjacent Z lines
- 9. Line in the centre of the I band
- 10. Darker-coloured region where myosin and actin overlap
- 11. Lighter-coloured region at the centre of the A band
Down
- 1. Fibres that have slower, weaker but longer lasting effects
- 2. Long rod-shaped fibres with projecting bulbous heads
- 5. Cytoplasm of muscle fibres full of mitochondria and ER
- 7. Globular protein involved in muscle contraction
- 10. Two strands twisted around each other