Question

What is the structire that makes up the posterior wall of the rtachea?

Answer 1

Unlike the anterior portion of the trachea which contains C shaped cartilage rings, the posterior part of trachea does not have any cartilage, instead they have elastic tissue and trachealis muscle, which is composed of smooth muscle fibers. these muscles bridges the gap between the free ends of C-shaped cartilages at the posterior border of the trachea. The esophagus lies immediately posterior to the cartilage-free posterior wall of the trachea.

The poster membranous wall of the tracheal provides a means for a food bolus to transit from the oral cavity through the esophagus to the stomach