Figure 10.18 presents respiratory organ slides labeled 1 to 7. Trachea slides (1, 2, 3) showcase cartilage rings and a uniform epithelium, while lung slides lack cartilage and feature diverse epithelial types and alveoli.
a. In Figure 10.18, the seven pictures depicting respiratory organs are labeled as slides 1, 2, 3, 4, 5, 6, and 7.
b. Among the images in Figure 10.18, the slides displaying tracheas are specifically slides 1, 2, and 3.
c. To differentiate between a trachea slide and a lung slide, consider the following features:
Cartilage Rings: Trachea slides exhibit cartilage rings that provide structural support and prevent collapse, while lung slides lack such cartilage structures.
Alveoli: Lung slides contain alveoli, which are tiny air sacs facilitating gas exchange. Trachea slides do not have alveoli.
Epithelial Lining: The trachea slide displays a uniform appearance with pseudostratified ciliated columnar epithelium lining the lumen. Conversely, the lung slide demonstrates a more diverse appearance, encompassing cell types like simple squamous epithelium, cuboidal epithelium, and smooth muscle.
By examining these features, one can effectively distinguish between slides depicting tracheas and those illustrating lungs.