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Ulcers are caused when stomach acid comes in contact with the stomach wall. What keeps the stomach acid away from the stomach wall under normal circumstances?


The enzymes secreted into the chyme from the stomach walls

The mucus coating secreted by the epithelial cells of the stomach

The saliva that is swallowed along with the chewed food

The sodium bicarbonate secreted into the stomach by the pancreas

Verified Answer :

The best and most correct answer among the choices provided by your question is the second choice.

The mucus coating secreted by the epithelial cells of the stomach keeps the stomach acid away from the stomach wall.

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Answer:

Option). the mucus coating secreted by the epithelial cells of the stomach

Explanation:

Stomach produces gastric juices, which is very acidic in nature, due to hydrochloric acid.

In normal conditions, surface epithelial cells of stomach are present in stomach inner wall, which are mucus-producing cells. These cells secret mucus and protect the inner side of stomach from concentrated gastric acid.

Stomach ulcers are sores in stomach wall, due to break in its inner lining by gastric acid, due to inhibition of mucus secretion due to various factors.

Thus, the correct answer is second option.

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