Respiratory System

4. the tube or cavity, with its surrounding membrane and muscles, that connects the mouth and nasal passages with the esophagus.
8. This accounts for 20% of lung cancers, and it is the lung cancer type linked most strongly with smoking.
10. the system by which oxygen is taken into the body and an exchange of oxygen and carbon dioxide takes place
12. a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature.
14. This lung cancer type usually starts in the bronchial tubes in the central part of the lungs and can cause symptoms early on, especially hemoptysis (coughing up blood).
15. Cavity The part of the mouth behind the teeth and gums that is bounded above by the hard and soft palates and below by the tongue and the mucous membrane connecting it with the inner part of the mandible.
17. The cavity on either side of the nasal septum, extending from the nares to the pharynx, and lying between the floor of the cranium and the roof of the mouth.
19. a colorless, odorless, incombustible gas present in the atmosphere and formed during respiration.

1. A chronic lung disease, such as asthma or emphysema, in which breathing becomes slowed or forced.
2. acute or chronic inflammation of the membrane lining of the bronchial tubes, caused by respiratory infection or exposure to bronchial irritants, as cigarette smoke.
3. Large cell carcinoma is the least common form of non-small cell lung cancer, responsible for about 10% of cases.
4. pleura that lines the inner chest walls and covers the diaphragm.
5. This type of lung cancer is often seen in non-smokers and is the lung cancer type most commonly found in women.
6. a muscular, membranous or ligamentous wall separating two cavities or limiting a cavity.
7. a muscular and cartilaginous structure lined with mucous membrane at the upper part of the trachea in humans, in which the vocal cords are located.
9. either of the two saclike respiratory organs in the thorax of humans and the higher vertebrates.
11. the tube in humans and other air-breathing vertebrates extending from the larynx to the bronchi, serving as the principal passage for conveying air to and from the lungs
13. a chemically inert, radioactive gaseous element produced by the decay of radium:
16. an air cell of the lungs, formed by the terminal dilation of tiny air passageways.
18. either of the two main branches of the trachea.