Bronchiolitis is a viral lung infection that causes inflammation in the smallest air passages in your lungs called bronchioles. Although it’s generally a childhood condition, bronchiolitis can also ...

What Is the Respiratory System? The respiratory system is the organs and other parts of your body involved in breathing, when you exchange oxygen and carbon dioxide. All the cells in your body need ...

Although they are different conditions, there are similarities between bronchiolitis and bronchitis. Both conditions cause inflammation, for example, but they affect different areas of the lung. The ...

The major sites of obstruction in chronic obstructive pulmonary disease (COPD) are small airways (<2 mm in diameter). We wanted to determine whether there was a relationship between small-airway ...

The gas exchange system is responsible for getting oxygen into the blood and removing carbon dioxide as a person breathes. Breathing is also called 'ventilation' and is the movement of gases into and ...