Read the following statements.
Statement– I (S-I): The food that is thoroughly mixed with the acidic gastric juice in the stomach, is called chyme.
Statement–II (S-II): Mucus and bicarbonates of gastric juice protect the mucosal epithelium from excoriation by the highly concentrated HCl.
In the light of given statements, choose the correct answer from the options given below.

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Both S-I and S-II are correct.

Only S-I is correct.

Both S-I and S-II are incorrect.

Only S-II is correct.

answer is A.

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Detailed Solution

In the stomach, the food undergoes thorough mixing with gastric juices, including hydrochloric acid, to form a semi-fluid mass called chyme. This mixing is essential for the initial stages of digestion and nutrient breakdown.

The stomach lining is covered by a layer of mucus, and the gastric juice contains bicarbonates. This combination serves a protective function. The mucus acts as a physical barrier, preventing direct contact between the acidic gastric juice and the stomach lining. Meanwhile, bicarbonates help neutralise the acidity of the gastric juice, creating a less corrosive environment for the stomach lining.

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