Biology Digestion/Nutrition ETEA 2023
PMDC Verified Question 18 of 48
Mastication causes exocrine glands under the tongue and in the back of mouth to secrete a watery liquid called:
A
Bolus
B
Bile
C
Pancreatic Juice
D
Saliva
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Saliva
Concept:

Mechanical digestion (chewing) physically stimulates nervous reflexes that activate local exocrine glands in the oral cavity.

Formula:

N/A

Solution:

  • Mastication (chewing) stimulates the parotid, submandibular, and sublingual glands.
  • These glands release a watery fluid composed of water, mucus, lysozyme, and amylase, collectively called Saliva.
  • Saliva lubricates the food, forming it into a swallowable mass.


Why other options are incorrect:

A Bolus is the chewed mass of food mixed with saliva, not the liquid itself. Bile is produced by the liver. Pancreatic juice is produced by the pancreas.

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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