The Human Body

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Across
  1. 5. term meaning "oxygen-poor"
  2. 7. the blood vessels that carry blood back to the heart
  3. 8. one of the main products absorbed by small intestine
  4. 11. the space in between two neurons
  5. 13. wave-like contractions of smooth muscle
  6. 16. similar tissues working together to perform a job
  7. 17. the type of neuron that sends information to the brain
  8. 18. the thinnest blood vessel
  9. 20. the muscle type found in blood vessels and intestines
  10. 21. another term for a nerve cell
  11. 24. the only voluntary muscle type
Down
  1. 1. the simplest level of organization
  2. 2. the thing, long fiber that carries an electrical impulse away from the cell body
  3. 3. the system that transports oxygen to all cells
  4. 4. the largest artery in the body
  5. 6. the system responsible for sensing the environment
  6. 9. the system that removes gas waste
  7. 10. the unit of the kidney that filters blood
  8. 12. the projects that carry an electrical impulse to the cell body
  9. 14. the lobe responsible for decision-making and planning
  10. 15. the fatty layer of insulation around a neuron
  11. 19. blood from the heart goes here to pick up oxygen
  12. 22. the type of neuron in the brain
  13. 23. this is what the excretory system cleans