Lungscapes pp 25-40 | Cite as

Morphological Aspects of Mucus Lining the Airways and of the Cells That Secrete It

  • P. C. Braga
  • G. Piatti


“Mucus” is the name of an extracellular material that lines the epithelium of the trachea, extrapulmonary bronchi, and intrapulmonary bronchi generally up to a diameter of 500 µm. Mucus is basically a mixture of apocrine secretions from secretory cells of respiratory mucosa and submucosal glands [1–3], but it also contains cells (nonresident) and other material present in the breathed air. The expectorated mucus (sputum) is mixed with saliva, cells, and material from the nose, pharynx, and mouth.


Goblet Cell Apical Part Ciliated Cell Morphological Aspect Submucosal Gland 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • P. C. Braga
    • 1
  • G. Piatti
    • 1
  1. 1.Centro di Farmacologia Respiratoria, Facoltà di Medicina e ChirurgiaUniversità degli Studi di MilanoItaly

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