Explores the structure of the lungs and why the respiratory system is such a vital part of the human body. Also explains the different illnesses and factors that can affect our lungs and breathing, from asthma to smoking-related diseases, and outlines ways that we can keep our lungs healthy.

Includes index and glossary.

The respiratory system -- Why do we need oxygen? -- Mouth and nose -- Pharynx and larynx -- Trachea and bronchi -- Respiratory noises -- Airway problems -- Lungs -- Blood supply to the lungs -- Chest investigations -- Lung diseases -- Inside the lungs -- Gaseous exchange -- Asthma -- Lungs and air pollution -- Smoking -- Breathing mechanics -- Breathing control -- Artificial breathing and air supplies -- Breathing emergencies -- What can go wrong with my lungs?