Terminal Bronchiole
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
Epithelium
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
- Cilia
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
- Basal bodies
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
- Club cells
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
Lamina propria
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
- Elastic fibers
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
- Smooth muscle
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
Alveoli
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
Bronchial vessel
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x
Pulmonary vessel
The smallest bronchiole (terminal) resembles a larger bronchiole except that it is narrower in diameter and its layers are thinner. The epithelium is simple columnar with cilia; club cells appear for the first time here. Elastic fibers continue in the lamina propria. A smooth muscle layer is still present. 200x, 1000x