Specialized Cells

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Across
  1. 2. mature bone cells that direct the other bone cells
  2. 5. a collection of tissues that carry out a special function
  3. 7. powerhouse of the cell; turns glucose into energy using oxygen
  4. 9. made of heart, blood, and blood vessels
  5. 10. a muscle not under conscious control
  6. 11. a nerve cell; the basic building block of the nervous system
  7. 13. involuntary muscle tissue found only in the heart
  8. 15. Blood cells that destroy disease-causing microorganism
  9. 16. Blood cells that carry oxygen from the lungs to the body
  10. 17. a muscle that is attached to the bones and is voluntary
  11. 18. the extension of a neuron which messages pass through to neurons, muscles
  12. 20. a group of similar cells that perform the same function
  13. 21. bone building cells (use calcium)
Down
  1. 1. the process mitochondria use oxygen to make energy from food
  2. 3. involuntary muscle found in internal organs
  3. 4. the cells and tissues that recognize and attack foreign substances
  4. 6. group of organs that work together
  5. 8. Parts of the blood that form blood clots
  6. 12. liquid part of blood
  7. 14. protects organs and provides framework for muscles
  8. 19. a muscle that is under conscious control
  9. 21. large cells that resorb or break down bone; help heal bone