A student examined three slides using both low magnification and high magnification. Each slide was a cross-section through a different airway in the gas exchange system. For each slide, the student saw three features. Slide 1: irregular arrangement of cartilage; highly folded inner layer; cilia on epithelial cells Slide 2: very few goblet cells; cilia on epithelial cells; thick layer of smooth muscle relative to wall thickness Slide 3: smooth muscle tissue; blood vessels; many goblet cells Which row gives the correct identifications for 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