Across
- 1. Light contractions that create tension within the muscle but doesn't have enough force to move it
- 3. What makes up myofibrils and regulates muscle contraction
- 4. An organ of the muscular system primarily comprised of cells called muscle fibers, which can contract.
- 8. A complete or lasting muscle contraction that occurs after a motor neuron sends out multiple nerve impulses in rapid succession
- 12. A contraction that produces movement
- 14. A type of striated muscle tissue found within the walls of the heart that causes the heart to beat through the automatic nervous system
- 15. A natural condition where the skeletal muscle stays partially contracted at all times. This helps to prevent damage to the muscles and joints from sudden movements, and maintain body posture.
- 16. A type of striated muscle tissue that is attached to bone that controls intentional physical actions. It acts through the somatic nervous system
Down
- 2. The point where motor neurons release chemicals to start muscle contraction
- 5. What controls skeletal muscles, individuals control motor units.
- 6. The membrane of muscle fibers and conductor of electrical signals to the muscle cell.
- 7. Organelles in muscle fibers that causes the muscles to contract by shortening.
- 9. Several muscle cells in a group with one function
- 10. A type of non striated muscle tissue that is found in the walls of many different internal organs that constricts to move substances around. It acts through the automatic nervous system
- 11. A human body system that uses muscles and tendons
- 13. tough connective tissue that adheres muscles to bone.