Biology Digestion/Nutrition KMU 2024
PMDC Verified Question 4 of 48
Which hormone stimulates the secretion of gastric juice?
A
Cholecystokinin
B
Gastrin
C
Insulin
D
Secretin
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Gastrin
Concept:

The digestive tract utilizes local endocrine signaling to coordinate the release of digestive fluids precisely when food is present.

Formula:

N/A

Solution:

  • The presence of food (especially peptides and amino acids) and stomach distension trigger G-cells in the stomach antrum.
  • These cells release the hormone Gastrin into the blood.
  • Gastrin circulates back and binds to receptors on parietal and chief cells, heavily stimulating them to ramp up the production of HCl and pepsinogen (gastric juice).


Why other options are incorrect:

CCK and Secretin are duodenal hormones that stimulate the pancreas/gallbladder and actually inhibit gastric secretion. Insulin regulates blood glucose levels.

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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