Across
- 2. Sarcomeres produce _____ tension when thick and thin filaments overlap between about 80 percent to 120 percent.
- 4. Muscle fibers are covered by the ______.
- 6. The functional unit of a skeletal muscle fiber.
- 7. When the stimulus frequency is so high that the relaxation phase disappears completely, the contractions become continuous
Down
- 1. A skeletal muscle fiber is surrounded by a plasma membrane called the ______.
- 3. A single muscle ____ has a latent period, a contraction phase when tension increases, and a relaxation phase when tension decreases.
- 5. During ______ contractions, muscle length changes to move a load.