Anatomy and Physiology Revision

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Across
  1. 1. the event that makes a nerve cell likely to transmit an impulse
  2. 5. the nerve cells that are activated by sensory input from the environment
  3. 7. when a muscle shortens and does work using energy in the form of ATP (energy). It is the result of special proteins moving between each other
  4. 11. a nerve cell forming part of a pathway along which impulses pass from the brain or spinal cord to a muscle or gland
  5. 13. transfers signals to other cells and organs
  6. 14. the thin protein that slides during contraction
  7. 15. fibres in the muscle made up of two proteins which allow skeletal muscle to move
Down
  1. 2. the thick protein that releases calcium to pull the actin filaments to contract
  2. 3. receive signals from other cells
  3. 4. muscles that work as a pair to carry out opposite actions
  4. 6. bone producing cells that arrange themselves in rings around blood vessels
  5. 8. a flexible material made of protein that initially forms the skeleton but is mostly replaced by bone. It is found protecting the ends of bones from friction in joints
  6. 9. the area of which one neuron communicates with another
  7. 10. bone destroying cells that remove bone from where it is not needed so allowing bones to respond to the forces exerted on them
  8. 12. when a muscle is not contracting