Introduction to diagnosis of lung disorders

[Becky]

The respiratory system starts at the nose and mouth and continues through the airways and the lungs. Air enters the respiratory system through the nose and mouth and passes down the throat (pharynx) and through the voice box, or larynx. The entrance to the larynx is covered by a small flap of tissue (epiglottis) that automatically closes during swallowing, thus preventing food or drink from entering the airways.
Doctors may suspect a problem with the lungs or airways based on symptoms. Symptoms of lung disorders often affect breathing and may include

Cough
Coughing up sputum
Coughing up blood
Shortness of breath
Wheezing

Symptoms that affect other parts of the body may also suggest a lung disorder is present. People with a lung disorder may have

Clubbing