Relaxation or a lack of muscle tone in the upper airway may be a factor.

A normal upper airway is open without blockage during sleep.

If the upper airways are tremendously obstructed, there may not be enough air movement to make much sound.

All three are associated with obstructions of the upper airways.

It more commonly is due to partial obstruction of the upper airway.

The cells that line our upper airways (nose and throat) take the brunt.

His mouth, upper airway and trachea were all intact with no foreign material present.

The cause of the cough is inflammation in the upper airways, usually due to a virus.

Cigarette smoking makes the swelling in your upper airway worse.

Drugs may be given to decrease the amount of saliva in the mouth or to dry the upper airway.