Skeletal Muscles

1234567891011
Across
  1. 2. Tiny muscle fibres
  2. 3. Forms fibrous strand around actin filament
  3. 4. Lighter-coloured region where myosin and actin don't overlap
  4. 6. Fibres that have quicker, stronger but shorter lasting effects
  5. 8. The distance between two adjacent Z lines
  6. 9. Line in the centre of the I band
  7. 10. Darker-coloured region where myosin and actin overlap
  8. 11. Lighter-coloured region at the centre of the A band
Down
  1. 1. Fibres that have slower, weaker but longer lasting effects
  2. 2. Long rod-shaped fibres with projecting bulbous heads
  3. 5. Cytoplasm of muscle fibres full of mitochondria and ER
  4. 7. Globular protein involved in muscle contraction
  5. 10. Two strands twisted around each other