Biology Digestion/Nutrition NUMS 2022
PMDC Verified Question 25 of 48
Enzymatic portion of gastric juice is secreted by which mucosal cell?
A
Oxyntic cells
B
Chief cells
C
Mucus cells
D
Endocrine cells
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Chief cells
Concept:

Gastric juice is a mixture of water, mucus, acid, and digestive enzymes.

Formula:

N/A

Solution:

  • The primary enzymatic component of gastric juice is pepsinogen (the inactive form of the protease pepsin).
  • This enzyme is synthesized and secreted exclusively by the Chief cells (zymogenic cells) located at the base of the gastric glands.


Why other options are incorrect:

Oxyntic cells secrete HCl (chemical, not enzymatic). Mucus cells secrete mucin. Endocrine cells secrete hormones (like gastrin) into the blood, not enzymes into the gastric lumen.

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