Tag Archives: Cillia

Chronic Bronchitis

In chronic bronchitis exposure to an irritant over many years causes inflammation in the lungs which leads to the following changes: The smooth muscle in the airway becomes thicker and narrows the breathing tubes (airways). The narrowing is permanent and cannot be reversed. You may feel breathless because your lungs and muscles are working harder […]

Normal lung defences/spit clearance

Please note there is no audio for this animation. ‘Cilia’ line your airways. These are tiny hairs forming brush-like structures. There are mucous producing cells in the larger airways known as goblet cells. This mucous may also be referred to as spit, phlegm or sputum. This mucous forms a moist layer on top of the […]