Body system

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Across
  1. 3. of the body are the bones
  2. 5. learning, and memory messages travel from one neuron to another over and over, creating connections, or pathways, in the brain
  3. 7. miles is how far the circulatory system can stretch
  4. 10. and sponges the names imply that the two types differ in density or how tightly the tissue is packed together
  5. 12. is the exchange of oxygen and carbon dioxide
  6. 13. that go through the whole body make up the peripheral nervous system
  7. 14. is the hardest working muscle
  8. 16. and the spinal cord are the central nervous system
  9. 17. system is an organ system
  10. 18. system brings oxygen into our bodies
  11. 19. system Delivers nutrients and oxygen to all cells of the body
  12. 20. nervous system controls many of the body processes you almost never need to think about, breathing, digestion, sweating, and shivering
Down
  1. 1. where a muscle is able to return to its resting shape and length
  2. 2. the weakest bone in the body
  3. 4. where a muscle can be stretched without damage by the application of a force
  4. 6. are apart of the respiratory system
  5. 8. is how many bones an adult human has
  6. 9. The brain has billions of them, and they have many specialized job
  7. 11. carry blood away from the heart
  8. 15. system is also known as the cardiovascular system