11.   Keen said she had distended so much that her air passage was blocked.

12.   Persistent childhood asthma is believed to alter the linings of the air passages in a way that can lead to obstructive pulmonary disease later in life.

13.   The ballooning tumor in his chest had all but blocked his air passage.

14.   The mass swelled up from below and wormed its way into his tongue, threatening to block his air passage.

15.   The range of sounds produced is astounding considering the limited length of the air passage.

16.   The surgery, called uvulopalatopharyngoplasty, tightens up flabby tissues to enlarge the air passages.

17.   Ozone, diesel fumes and suspended particles all act as irritants to the air passages.

18.   Asthma causes obstruction and inflammation of the air passages.

19.   For years, researchers have known that cats, dogs, dust mites and cockroaches can cause allergies that trigger the wheezing and constricted air passages of asthma.

20.   Richardson said illegal aliens who want to go home will receive free air passage.