Alveoli are tiny, balloon-shaped air sacs located at the end of the bronchioles, the branch-like tubes in the lungs. The alveoli move oxygen and carbon dioxide (CO 2) molecules into and out of your ...

Introduction: Attempted tracheal replacement efforts thus far have had very little success. Major limiting factors have been the inability to efficiently re-vascularise and mimic the mechanical ...

The easiest way to think of this is as a passage, that makes sure food and drink go down the oesophagus. And air goes up and down the trachea. There are 3 main parts to the pharynx. They are the: ...