Biology Digestion/Nutrition MDCAT 2014
PMDC Verified Question 47 of 48
HCl in gastric juice is secreted by which one of the following cells?
A
Chief cells
B
Mucous cells
C
Oxyntic cells
D
Kupffer 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: Oxyntic cells
Concept:

The highly acidic environment of the stomach (pH ~2) is necessary to activate pepsinogen and denature dietary proteins.

Formula:

N/A

Solution:

  • Oxyntic cells, also universally known as parietal cells, are located in the stomach lining.
  • They actively pump hydrogen ions (\(H^+\)) and chloride ions (\(Cl^-\)) into the lumen, forming Hydrochloric Acid (HCl).


Why other options are incorrect:

Chief cells secrete pepsinogen. Mucous cells secrete mucus. Kupffer cells are specialized macrophages located in the liver, completely unrelated to gastric secretion.

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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