CHAPTER 7 - BODY COORDINATION

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Across
  1. 5. Organelles where cellular respiration occurs
  2. 7. An organic catalyst
  3. 11. The space between two neurones
  4. 12. Any factor that stimulates a receptor and brings about a response
  5. 13. Part of the brain that is responsible for coordination and balance
  6. 14. Special cells that detect stimuli
  7. 18. A nerve cell
Down
  1. 1. The movement of particles of a substance from an area of high concentration to an area of low concentration
  2. 2. The process of maintaining a constant internal environment
  3. 3. A portion of the brain that constantly checks the internal environment of the body
  4. 4. Able to maintain a constant body temperature
  5. 5. All the chemical reactions occurring in the cells
  6. 6. Chemical substances that act as messengers in the body
  7. 8. Branches from the cell body that receive messages from other neurones
  8. 9. A substance that speeds up the rate of a reaction without being used up in the process
  9. 10. The lower half of the brain stem
  10. 15. gland The endocrine gland that controls the activities of other endocrine glands; it is often called the ‘master gland’
  11. 16. The organelle where proteins are manufactured
  12. 17. A nerve fibre that sends nerve impulses away from the cell body
  13. 19. impulse The electrical message carried by a nerve cell