Across
- 1. Occurs when a myosin head links with the actin
- 4. Tiny contractile units within a myofibril
- 5. Actin and Myosin are examples of _____.
- 7. The organelle in which calcium is stored
- 10. The protein filaments within a myofiber is called a ____.
Down
- 2. The plasma membrane of a muscle cell
- 3. Channels in myofibers that aid in signal transmission
- 6. Also known as the "thin filament"
- 8. A bundle of myofibrils make up a _____.
- 9. Also known as the "thick filament"