The endotracheal tube cuff provides a snug seal between the tube and the tracheal wall. The seal prevents escape of anesthetic gases through the trachea and prevents fluid (saliva or blood ...

The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open ciliated epithelium and goblet cells to clean the air before it reaches the lungs Goblet ...

base of the tongue and back wall of the throat (posterior pharyngeal wall) hypopharynx which connects the oropharynx and nasopharynx to the start of the oesophagus and the trachea via the larynx ...