Unit 12 Crossword Puzzle

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Across
  1. 5. protein found in the plasma; converted in order to create clots/scabs
  2. 7. warms, moistens, and filters air entering the body before it reaches the lungs
  3. 11. where digestive and respiratory systems meet
  4. 12. exception to the rule that arteries carry oxygenated blood from the heart to other parts of the body
  5. 13. process that amphibians use to push air into their lungs
  6. 16. the minimum change in a membrane’s voltage that must occur in order to trigger the action potential
  7. 19. prevents the backflow of blood
  8. 20. relaxation phase of the heart cycle where ventricles are being refilled with blood
  9. 21. iron-containing protein that transports oxygen
  10. 22. purges the blood of so much CO2 that the brain stops sending messages to the diaphragm
  11. 24. generates electrical impulses, located in the right atrium
Down
  1. 1. a set in the autonomic nervous system that primes the body for activities that gain and conserve energy for the body
  2. 2. respiratory surface used by insects; extensive network of branching internal tubes
  3. 3. chronic cardiovascular disease that gradually impairs the arteries
  4. 4. communication line made from cable-like bundles of neuron fibers tightly wrapped in a connective tissue
  5. 6. process that is enabled by the capillaries; chemical exchange
  6. 8. chemical that carries information from a nerve cell to another cell that will react
  7. 9. high blood pressure
  8. 10. part of the brain that coordinates body movement
  9. 14. carries blood between the heart and rest of body
  10. 15. sheet of muscle; below the lungs
  11. 17. grapelike clusters of air at the end of the bronchioles
  12. 18. relay point between a neuron and a receiving cell
  13. 22. serves as a homeostatic control center; controls pituitary gland
  14. 23. receive incoming messages from other neurons and convey this information toward the cell body