Which of the following maintains the patency openness)of the trachea?

Question

Quizplus · Accepted Answer

Cartilage rings maintain the patency of the trachea by providing structural support to the trachea and preventing it from collapsing during respiration. Surfactant is a substance that reduces surface tension in Alveoli to prevent their collapse, pseudostratified ciliated epithelium lines the respiratory tract to help move mucus and trapped debris out of the lungs, and surface tension of water plays a role in pulmonary surfactant function in the alveoli. However, none of these maintain the patency of the trachea like cartilage rings do.

Which of the Following Maintains the Patency Openness)of the Trachea