Match the structure with the best description. :: Cilia :: Bronchioles A series of concave sacs with a thin wall of epithelial cells and a large surface area :: Alveoli Pulmonary vessels Small, hair-like projections that line the trachea Possess a ring of smooth muscle below the ring of epithelial cells surrounding the lumen Responsible for the transport of carbon dioxide to and oxygen from the lungs
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7. Label the cellular features of the following cross-sectional diagram: Large conducting airway Small conducting airway Alveolus A. Goblet Cells B. Ciliated Epithelium C. Smooth Muscle D. Cartilage E. Capillaries F. Adventitia a. Submucosal Glands b. Mucous Cells H. Lymphatic Vessels I. Epithelium J. Basement Membrane K. Lamina Propria 8. Referring to the textbook and the figure of the respiratory mucosal epithelium above, answer the following questions: A. The mucous blanket is formed by secretions from goblet cells and submucosal glands. B. The mucous blanket is composed of two layers. The upper portion is called the sol layer; the function of this layer is to trap particles and pathogens. The lower portion is called the gel layer. C. The mucous blanket is propelled up through the airway by the coordinated beating of cilia. D. Approximately 100 mL of mucus is secreted per day in a normal, healthy person. E. Conditions such as smoking, pollution, and respiratory infections could decrease the effectiveness of mucociliary clearance.
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