The cartilage ring is immediately covered, on both surfaces, with bright pink perichondrium. Slide 2 Trachea at higher magnification, showing pseudostratified ciliated columnar epithelium lining the lumen. A wide blood vessel lies in the lamina propria below.
Hyaline cartilage is at the bottom of the picture.
Slide 3 Detail of pseudostratified ciliated columnar epithelium lining the trachea. Note the presence of pale goblet cells. A pale and quite thick basement membrane underlies this epithelium. The cartilage is basophilic in color. Notice how cellular the c.t.