What is the significance of the "C-shaped" cartilages that reinforce the tracheal rings
A)These cartilages hold the trachea rigidly open at the same diameter at all times.
B)The incomplete portion of the C-shaped cartilages are located at the posterior of the tracheal cartilages, to permit the esophagus to bulge anteriorly into the tracheal lumen in transient fashion to permit a large bolus to pass.
C)They form a solid cartilaginous tube.
D)The open region permits passage of the nerves that stimulate the muscles of the laryngeal region.
E)None of the answers are correct.

Question

Quizplus · Accepted Answer

The incomplete portion of the C-shaped cartilages is located at the posterior of the tracheal cartilages, allowing the esophagus to bulge anteriorly into the tracheal lumen to permit a large bolus to pass through the esophagus. This is known as the tracheoesophageal groove. If the cartilages were complete circles, it would be difficult for the esophagus to pass through. The C-shape also allows for flexibility and movement during breathing.

What Is the Significance of the "C-Shaped" Cartilages That Reinforce