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Digestion and Absorption — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYDigestion and Absorption2 Marks
Question
How is the intestinal mucosa protected from the acidic food passing from stomach?
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Answer

The mucosa is secreted by the goblet cells. It also mixes with the bicarbonates from the pancreas. These protect the intestinal mucosa from acid food. It also provides an alkaline medium (pH-7.8) for pancreatic enzyme activities. Submucosal glands (Brunner's glands) also help in this action.

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