Across
- 4. air remaining in the lungs after exhalation that cannot be voluntarily exhaled
- 5. roof of mouth formed by the fusion of the two maxillae bones
- 7. a muscle that separates the thoracic cavity from the abdominopelvic cavity
- 8. folds in the mucous membrane of the larynx that vibrate to produce sound
- 9. part of the lung that leads into the alveoli and is involved in gas exchange
- 12. membrane composed of the alveolar wall, the capillary wall, and their basement membranes; gases must cross this membrane from proper exchange to occur
- 14. the process of supplying the body with oxygen and removing carbon dioxide; includes both internal and external respiration
- 15. the act of expelling air from the lungs; exhalation
- 18. cartilage connective tissue containing collagen fibers
- 21. the region of the thoracic cavity between the lungs that houses the heart
- 26. single tonsil, also called adenoid, located in the nasopharynx
- 28. pattern of breathing faster and deeper during exercise
- 30. the muscular tube extending from the posterior of the nasal cavities to the esophagus.
- 32. the only external organ of the respiratory system
- 33. the cartilaginous organ located between the trachea and the pharynx; voice box
- 35. volume of air that never reaches the alveoli and does not participate in gas exchange
- 40. soft respiratory sounds produced when air fills the alveoli
- 41. portion of the roof of the mouth that is not supported by bone
- 42. amount of air that can be forcibly inhaled in addition to tidal volume
Down
- 1. the volume of air that can be expelled from the lungs by forcible expiration after the deepest inspiration; total exchangeable air.
- 2. pair of tonsils flanking the oropharynx
- 3. air-filled spaces within the maxillae on either side of the nasal cavity that are lined with mucous membrane; help lighten the skull
- 6. all respiratory passages that carry air to the terminal bronchioles and beyond
- 10. hemoglobin combined with oxygen
- 11. pressure in the space between the pleurae; always negative compared to intrapulmonary pressure
- 13. divisions of the trachea that lead into the right and left lungs
- 16. the drawing of air into the lungs inhalation
- 17. roof of the mouth
- 19. the opening between the vocal cords in the larynx
- 20. projections from the walls of the nasal cavity that increase air turbulence and the surface area of mucous membrane exposed to the air to aid in warming and moistening
- 22. the elastic cartilage at the back of the throat; covers the glottis during swallowing
- 23. a chemical substance coating the pulmonary alveoli walls that reduces surface tension, thus preventing collapse of the alveoli after expiration
- 24. serous membrane layer covering the cavity in which the lung resides
- 25. the presence of air or gas in a pleural
- 27. organs of the respiratory system responsible for air exchange with the outside and gas exchange with blood
- 29. pair of tonsils at the base of the tongue
- 31. the windpipe; the respiratory tube extending from larynx to bronchi
- 34. serous membrane layer covering the surface of each lung
- 36. tissue at midline that separates the nasal cavity into right and left sides
- 37. the smallest conducting passages in the lungs
- 38. the board inferior area of each lung resting on the diaphragm
- 39. amount of air inhaled or exhaled with a normal breath