BIOL 2P93 Lecture Notes - Simple Columnar Epithelium, Bronchus, Histology

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See chart on last page of lab instructions! Trachea: pseudostratified ciliated columnar epithelium (oriented cilia) with goblet and brush cells; underlying basement membrane, mucous tissue, and nearly complete c-shaped cartilage. Bronchi: like trachea but cartilage is less complete. Bronchiole: simple columnar epithelium with clara cells; no mucus glands, goblet cells or cartilage; always accompanied by branch of pulmonary artery. Terminal bronchiole: last portion of bronchiole with no alveoli. Respiratory bronchiole: immediately follows terminal bronchiole; some alveoli bud off sides. Alveolar duct: connects respiratory bronchiole to several alveoli. Type 2 (aka greater) pneumocyte: surfactant producing, lamellar bodies.

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