Across
- 5. gel-like substance inside the cell
- 7. Immediate energy source
- 8. transports oxygen to the Mitochondria
- 9. connective tissue surrounding fascicle
- 12. Carbohydrates, fats,proteins
- 13. small protein structures
Down
- 1. chemicals that speed up energy production
- 2. cell membrane of the muscle fibre
- 3. contractile unit in a muscle fibre
- 4. connective tissue surrounding each muscle fibre
- 6. layer of connective tissue that covers a skeletal muscle
- 10. each muscle fibre is made up of thousands of these
- 11. bundle of muscle fibres
- 13. site of aerobic energy production