10. Alveolar sacs
Are present at the ends of bronchi
Have Outer lining made of cuboidal epithelium
Are Cartilaginous
Have high concentration of O2
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Answer:Describe the changes in the type of epithelium throughout the respiratory ... bronchioles, alveolar ducts, alveolar sacs, and alveoli based on key structural ... A bundle of smooth muscle fibers bridges the gap between the two ends of the cartilage. ... have a ciliated columnar epithelium that soon transitions to a low cuboidal ...
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