MUCH has been said in the past about the relation of chronic irritation to the development of cancer. Recent concepts are more specific and put carcinogenesis on a physicochemical basis in which the ...

Researchers identified two types of olfactory receptors in human muscle cells of bronchi. If those receptors are activated by binding an odorant, bronchi dilate and contract -- a potential approach ...

Methods for the study of cartilaginous airways represent technically very laborious and time-consuming procedures, many of these with the inevitable disruption or elimination of the distal bronchi and ...

The main gel-forming mucins found in human airways are MUC5B and MUC5AC. 1 In healthy individuals, low levels of MUC5B and MUC5AC can be detected in mucus; although MUC5B is mainly present in the ...

Asthma affects 17.23 million people in India and the number rises every year. It is characterized by severe wheezing and breathlessness that vary in their degree of severity from one individual to ...

Part of Biology (Single Science) Cells, organ systems and ecosystems The air that enters the nasal cavity flows down the trachea. The trachea has a number of adaptations: cartilage rings in the walls ...

Bronchiectasis is a chronic condition marked by irreversible dilatation of bronchi and bronchioles due to destruction of airway walls. Causes include congenital disorders, infections, autoimmune ...

A new study has found that a novel avian-origin H7N9 influenza A virus, which has recently emerged in humans, attaches moderately or abundantly to the epithelium of both the upper and lower ...

Three weeks ago Publisher Charles C. Thomas of Springfield, Ill. issued 1,500 copies of a small monograph called The Lung by Anatomist William Snow Miller of the University of Wisconsin. Price was ...

Inhalation and exhalation is the same as breathing or ventilation and is a physical process which moves air into and out of your lungs. Respiration is not the same as breathing, and is a chemical ...