Across
- 1. What is the immovable end of the muscle?
- 3. The excessive stretching and possible tearing of a muscle or tendon.
- 5. The thick filament of a sarcomere.
- 7. Results in a muscle contracting and not relaxing.
- 8. What are fibers organized into bundles in skeletal muscle called?
- 10. This means that the cells have an electrical impulse that causes them to react.
- 12. What is the movable end of the muscle?
- 14. The neurotransmitter that crosses the synaptic gap and causes muscle contraction.
- 16. What is the boundary between sarcomeres?
- 17. What is the membrane that surrounds each muscle?
- 19. The minimal amount of stimulus required to cause a contraction.
Down
- 2. When more and more fibers contract as the intensity of the stimulus is increased.
- 3. The gap between the neuron and motor end plate.
- 4. ______ cells contain a lot of mitochondria.
- 6. Muscle that is voluntary.
- 9. Muscle that is not striated.
- 11. A progressive neurodegenerative disease affecting motor neurons in the spinal cord.
- 13. What is the plasma membrane of muscle cells called?
- 15. The enlargement of a muscle.
- 18. The energy source of muscle contractions.