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RESPIRATORY SYSTEM

RESPIRATORY SYSTEM. Respiratory system is responsible for oxygen supply of cells and tissues. It includes conducting portion Nasal cavity Nasopharynx Larynx Tracheo-bronchial tree And respiratory portion Pulmonary alveoli. Respiratory type epithelium – pseudostratified ciliated.

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RESPIRATORY SYSTEM

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  1. RESPIRATORY SYSTEM

  2. Respiratory system is responsible for oxygen supply of cells and tissues It includes conducting portion • Nasal cavity • Nasopharynx • Larynx • Tracheo-bronchial tree And respiratory portion • Pulmonary alveoli

  3. Respiratory type epithelium – pseudostratified ciliated • Ciliated cells • Goblet cells • Basal cells Specialized olfactory area • Olfactory cells (modified bipolar neurons) with knobs (olfactory vesicles) and hair-like processes (olfactory cilia) • Supporting (sustentacular) cells • Basal cells

  4. Tracheo-bronchial epithelium • Ciliated cells (30%) • Goblet cells (30%) • Basall cells (30%) • Brush border cells (3%) • Diffuse neuroendocrine (APUD) cells (3%) • Serous cells (4%)

  5. Bronchiolar epithelium • Ciliated cells • Clara cells • Basal cells

  6. Alveolar epithelium • Pneumocytes type I (respiratory) • Pneumocytes type II (secretory) • Alveolar macrophages Respiratory barrier

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