Across
- 3. a dome-shaped muscular partition separating the thorax from the abdomen in mammals. It plays a major role in breathing, as its contraction increases the volume of the thorax and so inflates the lungs.
- 5. the opening in the lower part of the human face, surrounded by the lips, through which food is taken in and from which speech and other sounds are emitted.
- 7. lung inflammation caused by bacterial or viral infection, in which the air sacs fill with pus and may become solid. Inflammation may affect both lungs ( double pneumonia ), one lung ( single pneumonia ), or only certain lobes ( lobar pneumonia ).
- 9. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
- 12. the exchange of gas between the alveoli and the external environment.
- 16. relating to or affecting respiration or the organs of respiration.
- 18. the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen
- 19. slimy substance, typically not miscible with water, secreted by mucous membranes and glands for lubrication, protection, etc.
- 21. a short microscopic hairlike vibrating structure found in large numbers on the surface of certain cells, either causing currents in the surrounding fluid, or, in some protozoans and other small organisms, providing propulsion.
- 22. the process of being mentally stimulated to do or feel something, especially to do something creative.
Down
- 1. breathe out
- 2. The space inside the nose
- 4. relating to or affecting respiration or the organs of respiration.
- 6. The airway that leads from the larynx (voice box) to the bronchi (large airways that lead to the lungs).
- 8. the part of the alimentary canal that connects the throat to the stomach; the gullet. In humans and other vertebrates it is a muscular tube lined with mucous membrane.
- 10. a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
- 11. a partition separating two chambers, such as that between the nostrils or the chambers of the heart.
- 13. a respiratory condition marked by spasms in the bronchi of the lungs, causing difficulty in breathing. It usually results from an allergic reaction or other forms of hypersensitivity.
- 14. The large air passages that lead from the trachea (windpipe) to the lungs.
- 15. The hollow tube inside the neck that starts behind the nose and ends at the top of the
- 17. take air into the lungs and then expel it, especially as a regular physiological process.
- 20. the part of the body of a mammal between the neck and the abdomen, including the cavity enclosed by the ribs, breastbone, and dorsal vertebrae, and containing the chief organs of circulation and respiration; the chest.