Return to IndexStep 1: Taking Control of Your AsthmaStep 2: What is Asthma?Step 3: Know the SignsStep 4: How Asthma Is DiagnosedStep 5: The Levels of SeverityStep 6: Determine Your Goals and ExpectationsStep 7: Asthma DrugsStep 8: Drug Delivery DevicesStep 9: Understand Your Action PlanStep 10: Make "Peak Flow" a Habit!Step 11: Avoid Asthma TriggersStep 12: Visit Your Doctor RegularlyKey PointsGlossary
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Return to IndexStep 1: Taking Control of Your AsthmaStep 2: What is Asthma?Step 3: Know the SignsStep 4: How Asthma Is DiagnosedStep 5: The Levels of SeverityStep 6: Determine Your Goals and ExpectationsStep 7: Asthma DrugsStep 8: Drug Delivery DevicesStep 9: Understand Your Action PlanStep 10: Make "Peak Flow" a Habit!Step 11: Avoid Asthma TriggersStep 12: Visit Your Doctor RegularlyKey PointsGlossary
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| Lungs video |
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Let's take a journey through the air passageways of the lungs. Within the lungs, you can see a network of tubes called the bronchial tree, through which air enters and leaves your body.
Upon inhalation, the air you breathe in passes through the trachea (windpipe) and follows the network of bronchial tubes into each lung. The winding passageways branch into smaller and smaller sections, which end at tiny air sacs called alveoli. In each alveolus, the oxygen you inhale is exchanged for the carbon dioxide released from the cells in your body. The carbon dioxide is expelled in the reverse direction during exhalation.
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Review Date:
6/18/2008
Reviewed By: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. Previously reviewed by Alan Greene, MD, FAAP, Department of Pediatrics, Packard Children's Hospital, Stanford University School of Medicine; Chief Medical Officer, A.D.A.M., Inc. (5/16/2007)
Reviewed By: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. Previously reviewed by Alan Greene, MD, FAAP, Department of Pediatrics, Packard Children's Hospital, Stanford University School of Medicine; Chief Medical Officer, A.D.A.M., Inc. (5/16/2007)
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A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
