What is this and what layers are there?

Study for the CAMLPR Histology Practice Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

This is the trachea. Its wall features a mucosa lined by pseudostratified ciliated columnar epithelium with goblet cells, sitting on a lamina propria, then a submucosa, and outside that a framework of hyaline cartilage rings that keep the airway open. The option that mentions hyaline cartilage, submucosa, lamina propria, and, specifically, pseudostratified columnar epithelium, matches this classic structure and naming, making it the best fit. Structures described as bronchioles lack cartilage and have a different epithelium, and the bronchus has cartilage present but not as complete rings and a different arrangement, so they aren’t as accurate for identifying the trachea.