Should You Spit Out Mucus When You Cough?
A discomforting, thick mucus in your throat and chest is a common symptom of respiratory viruses such as the flu. The mucus ...
Brian Mackenzie8y
Measurement of Ventilatory Function
A great deal can be learned about the lungs' mechanical properties from measurements of forced maximal expiration and inspiration. The spirometer (built-in 1846 by Hutchinson) measures ventilatory ...