Biology facts

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Across
  1. 2. a large group of bones in a body
  2. 3. these help oxygen reach things like cells
  3. 4. these hold your bones together and allow you to move around
  4. 7. specialized cells working together to perform a function
  5. 8. different tissues working together to perform a specific task
  6. 9. helps the body break down food and absorb nutrients
  7. 11. the smallest blood vessel
  8. 12. small tubes that send deoxygenated blood to the heart
Down
  1. 1. the exchange of co2 and o2 from the lungs to the cells
  2. 5. the study of how different parts of the body work
  3. 6. the organ that pumps blood through the body
  4. 10. unspecialized cells