Circulation - Respiration - Nervous System

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Across
  1. 3. Clusters of air sacs in the lungs
  2. 5. Voice Box
  3. 8. Prevent back-flow of blood
  4. 9. Sends commands to skeletal muscles
  5. 10. The only vein in the body that carries oxygenated blood
  6. 13. Lead air to each lung
  7. 14. relays signals to another neuron or effector
  8. 15. Windpipe
  9. 17. The only artery in the body that transports deoxygenated blood
  10. 18. Purges blood of so much carbondioxide that the brain stops sending messages to diaphram
  11. 19. Location where digestive and respiratory systems meet
  12. 20. Bonds better with hemoglobin than oxygen
  13. 21. Carries blood between heart and rest of body
  14. 24. Communication line made from bundles of neuron fibers
  15. 26. Sensory neurons carrying impulses from sense organs to CNS
  16. 28. Cardiopulmonaresuscitation
  17. 29. disease that causes alveoli to disintegrate
Down
  1. 1. Nucleus and other organelles
  2. 2. Conducts signal toward another neuron or effector
  3. 4. Rhythmic contraction and relaxation of the heart
  4. 6. Disease caused by iron deficiency
  5. 7. Carries blood between heart and lungs
  6. 8. Lower heart chambers that pump oxygenated blood to certain body organs and tissues
  7. 11. Diffuse nutrients and oxygen into tissue
  8. 12. Peripheral Nervous System
  9. 16. Nerve cell specialized for carrying signals throughout body parts
  10. 22. chain of beadlike supporting cells
  11. 23. Receive incoming messages from other cells or the environment
  12. 25. Smaller branches in each lung that transport air
  13. 27. The largest blood vessel
  14. 30. Separates oxygenated blood from deoxygenated blood