ACSM Certified Exercise Physiologist (EP-C) — Question 1

The C-shaped cartilages of the trachea allow all of the following to occur EXCEPT __________.

Answer options

• A. Ciliated movement of mucus-secreting cells.
• B. Distention of the esophagus.
• C. Maintenance of open airway.
• D. Prevention of tracheal collapse during pressure changes.

Correct answer: A

Explanation

The correct answer is A because the C-shaped cartilages primarily provide structural support and do not directly influence the movement of cilia. Options B, C, and D are functions directly supported by the cartilaginous structure, allowing the esophagus to expand, maintaining airway patency, and preventing collapse under varying pressures.