WorkCover Queensland accident insurance policy renewal. Pay your premium in full or set up a payment plan before the 30 September deadline. Get a 3% discount on your premium if you pay in full by 16 September (discount not applicable for premiums of $290) .
1 The lungs exchange oxygen and carbon dioxide between the air we breathe and the blood. 2  The tracheobronchial tree is the passage way from the mouth to the interior of the lung. 3  Gas exchange occurs in the alveoli deep in the lungs. 4  Breathing air in (inhalation) requires muscular effort.
Cilia in the trachea are an important protective mechanism of the body and work to trap inhaled foreign particles, preventing them from becoming lodged in the lungs, explains EncyclopÃ¦dia Britannica. When a particle is inhaled, the cilia of the trachea stop and move the object away from the lungs with a coordinated sweeping action. Continue Reading.