Human Body Crossword

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Across
  1. 2. Tiny sacs of tissue that move gases between air and blood
  2. 5. The upper part of the heart (A right and left)
  3. 7. The lower part of the heart (A right and left)
  4. 8. A group of specialized tissues that work together to do a certain function
  5. 11. The smallest blood vessel and connects veins and arteries
  6. 13. A fragment of cell that helps in producing scabs over open wounds
  7. 15. A group of cells that a specialized ant one thing
Down
  1. 1. A muscle that moves up and down and allows breathing (up is breathing in and down is breathing out)
  2. 3. System The system that filters our blood and takes waste out of it and eliminates it
  3. 4. The passages that direct air and other gases to the alveoli from the bronchi
  4. 6. The two passages that direct air and other gases into the right and left lung
  5. 9. A muscular sac that holds our urine
  6. 10. Filter in the kidney that filters blood as it passes through
  7. 12. The part of blood that is liquid
  8. 14. A small structure that covers the inside of the small intestine and absorb nutrients out of food