Biology Respiration / Gaseous Exchange NTS 2019
PMDC Verified Question 20 of 34
In the passageways of the respiratory system, mucus secreting cells are called:
A
Tracheal cells
B
Surfactant cells
C
Goblet cells
D
Pleural cells
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Goblet cells
Concept: The respiratory epithelium utilizes specialized glandular cells to maintain moisture and trap debris.

Solution:
  • The epithelial lining of the respiratory tract contains modified columnar cells shaped like a wine goblet.
  • These goblet cells synthesize and secrete mucus directly onto the surface of the respiratory passageways.


Why other options are incorrect:
  • Tracheal cells: A non-specific term; the trachea contains multiple cell types (ciliated, basal, goblet).
  • Surfactant cells: Also known as Type II pneumocytes, these are found exclusively in the alveoli to reduce surface tension, not in the general passageways to secrete mucus.
  • Pleural cells: Form the mesothelial lining of the pleural cavity.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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