Chapter 10 Respiratory System Quiz

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Across
  1. 3. a semi-rigid tube of soft tissue wrapped around c-shaped bands of cartilage
  2. 7. membranes a thin layer of connective tissue that covers the outer surface of the lungs and lines the thoracic cavity
  3. 8. pressure the pressure of each of the individual gases that make up the total pressure of a mixture of gases
  4. 10. capacity the maximum amount of air that can be inhaled or exhaled, measured from the fullest inhalation to the deepest exhalation
  5. 11. cellular respiration the process in which cells use glucose and oxygen to produce ATP
  6. 14. a protein that helps remove excess hydrogen ions from the blood to prevent blood acidification
  7. 17. receptors sensors in the lungs that send inhibitory signals to the brain when the lungs have expanded
  8. 20. a large dome-shaped sheet of muscle located beneath the lungs that is the primary muscle in breathing
  9. 21. tiny air-containing sacs in the lungs where gas exchange occurs
  10. 22. volume the volume of air inhaled or exhaled during a normal involuntary breath
  11. 24. centre the part of the brain which controls the rate of respiration
  12. 25. acid about 73% of carbon dioxide in the bloodstream reacts with water to form ____________
Down
  1. 1. during ____________ the diaphragm and external intercostal muscles return to their relaxed position
  2. 2. ____________ is based on the principle of negative pressure in the lungs
  3. 4. during inhalation, oxygen diffuses into the ____________ that surround the alveoli
  4. 5. during breathing, the ____________ remains open so air flows into the trachea
  5. 6. cavity the fluid-filled space between the membranes that line the lungs that allow the lungs to slide smoothly as they expand and contract
  6. 9. air travels from the mouth/nasal passages to the ____________
  7. 12. plasma only 7% of carbon dioxide in the bloodstream remains dissolved in the ____________
  8. 13. tiny hair-like structures that line the trachea
  9. 15. the structures into the lungs that branch into smaller and smaller tubes
  10. 16. reserve volume the additional amount of air that can be forcibly exhaled after a normal exhalation
  11. 18. lung capacity the maximum volume of air that can be inhaled during a single breath, including all volumes
  12. 19. air passes from the trachea to the ____________
  13. 23. dioxide the primary factor that control breathing rate