Circulation - Respiration - Nervous System

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