Functions of Cartilage in the Trachea:

• The cartilage rings in the trachea provide structural support to the airway, preventing it from collapsing during inhalation when the pressure inside the thoracic cavity decreases.

• The rigid cartilage rings help to maintain the patency or openness of the trachea, ensuring that it remains open for the passage of air during both inhalation and exhalation.

• Cartilage in the trachea acts as a protective barrier, shielding the underlying delicate tissues of the respiratory tract from external compression or trauma.

• While the trachea needs to be rigid enough to prevent collapse, the presence of cartilage also prevents overexpansion during inhalation, maintaining the integrity of the airway.