Trachea Histology · Histology

What is the primary function of the goblet cells found in the tracheal epithelium?

  1. To secrete mucus that traps inhaled particles
  2. To provide structural support to the mucosa
  3. To act as stem cells for epithelial regeneration
  4. To sense oxygen levels in the air
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Correct answer: To secrete mucus that traps inhaled particles

Goblet cells are unicellular exocrine glands that synthesize and secrete mucin. This mucus forms a layer over the cilia to trap dust and microorganisms, which are then moved toward the pharynx.

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