A student examined three slides under both low magnification and high magnification. Every slide showed a section through a different airway in the gas exchange system. The student noted three features on each slide. Slide 1: cartilage arranged irregularly; the inner layer was highly folded; cilia on epithelial cells. Slide 2: very few goblet cells; cilia on epithelial cells; a thick smooth muscle layer compared with wall thickness. Slide 3: smooth muscle tissue; blood vessels; many goblet cells. Which row correctly names the three slides?
- Aslide 1: bronchus; slide 2: bronchiole; slide 3: trachea
- Bslide 1: bronchus; slide 2: trachea; slide 3: bronchiole
- Cslide 1: trachea; slide 2: bronchiole; slide 3: bronchus
- Dslide 1: trachea; slide 2: bronchus; slide 3: bronchiole