Images Dated 14th December 1999

Artwork of bronchodilator action in asthma

Asthma treatment. Artwork showing the action of a bronchodilator drug breathed into the respiratory system from an aerosol inhaler to treat asthma. The bronchi, covered in bands of cartilage (purple), lead to smaller bronchioles (smooth white airways) that end in clusters of alveoli air sacs (white). Nerve fibres (yellow), arteries (red) and veins (blue) are also seen. The bronchodilator drug widens the narrowed bronchi which contain sputum, or phlegm (yellow). In asthma, a trigger, such as an allergen, causes the bronchioles to narrow and become inflamed. This results in increased production of mucus, further reducing the lungs oxygen capacity

© JOHN BAVOSI/SCIENCE PHOTO LIBRARY

open-uri20120927-32737-3sj5ps

Formula One Testing, Jerez, Spain. 14/12/99
Darren Manning gets his first taste of an F1 car testing the hybrid Williams BMW.
World LAwrence/LAT Photographic
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