Circulation - Respiration - Nervous System

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