Medically reviewed by Susan Russell, MD The term "smoker's lung" refers to lung damage caused by smoking cigarettes. Over time, the chemicals in cigarettes damage the airways and lungs, leading to ...

Cilia are small hairs which beat to push the mucus back up the trachea so it can be swallowed and destroyed in the stomach. Clean air then enters the two bronchi, one bronchus going to each lung.

Zoe and the children do a lung capacity experiment, and discuss the dangers of smoking. CGI animation explains the makeup of the air that we breath and how nasal hairs and snot filter out ...