Login

If you do not have an account, please register here.

Contact us now find out how your company can use this resource!

During normal respiration, air travels through the nose, down the trachea, and into smaller and smaller airways called bronchi. The bronchi divide into bronchioles and finally into tiny grape-like clusters of thin, fragile sacs called alveoli. The alveoli are where oxygen is exchanged for carbon dioxide in the blood.

People who work in mines or quarries, or who work with substances such as concrete or glass, are at increased risk for inhaling small particles of silica ... more