What are the primary muscles used in ventilation What is lun

What are the primary muscles used in ventilation? What is lung compliance? Does changing compliance affect oxygen saturation?

Compare and contrast emphysema and chronic bronchitis.

Solution

The primary muscles used in ventilation are:

Diaphragm , intercostals and abdominal muscles used during inspiration and expiration .

Lung compliance : It is the measurement of how much pressure is required to produce a change in volume of lungs. high degree of compliance means loss of elastic recoil of lungs as in emphysema and low compliance means greater change in pressure is needed for a given change in volume as in pneumonia .

Emphysema and chronic bronchitis are two different types of chronic obstructive pulmonary diseases (COPD) . in emphysema there is a gradual destruction of alveoli where as in chronic bronchitis lungs become inflamed and affects wind pipe due to severe infection of lungs .

In emphysema there is shortness of breath as recoiling capacity of lungs diminishes where as in chronic bronchitis there is severe coughing .

Emphysema diseased persons are called pink puffers where as chronic bronchitis diseased persons are called blue bloaters .