Images Dated 14th December 1999
Available as Framed Photos, Photos, Wall Art and Gift Items
Choose from 22 pictures in our Images Dated 14th December 1999 collection for your Wall Art or Photo Gift. Popular choices include Framed Photos, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.
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Featured 14 Dec 1999 Print
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
