The distribution of squamous-cell carcinoma in the respiratory tract suggests a relation to the ciliary streaming. These carcinomas are apt to occur among the larger bronchi, where the ciliary stream ...

The trachea, also called the windpipe, is part of the passageway that supplies air to the lungs. Any prolonged blockage, even for a few minutes, can cause death. The trachea is about 4.5 inches long ...

THE complex nature of chronic bronchitis makes it difficult to define the relative importance of the many factors that might contribute to its pathogenesis and course. 1,2 The progressive decline of ...

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 ...