Explain the significance of the alkaline mucous layer lining the interior surface of the stomach
A) The mucous layer protects against foreign pathogens in the gastric lumen.
B) The mucous layer modifies the pH of food for better digestion.
C) The mucous layer activates antibodies to kill microorganisms in the gastric lumen.
D) The mucous layer protects epithelial cells from the acid and enzymes in the gastric lumen.
E) The mucous layer keeps food from sticking to the walls of the stomach so it can enter the small intestine.
Answer: D
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