What acid is secreted by the stomach during digestion?

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Prepare for the West-MEC Medical Assisting Technical Skills Assessment. Study with flashcards and multiple choice questions, with comprehensive hints and explanations. Get exam ready!

Multiple Choice

What acid is secreted by the stomach during digestion?

Explanation:
During digestion, the stomach releases a highly acidic fluid to create an environment that activates enzymes and helps break down food. This acid is hydrochloric acid, produced by parietal cells in the stomach lining. It lowers the pH to around 1–3, which activates pepsinogen to pepsin, denatures proteins, and helps kill ingested microbes. The other acids listed are not secreted by the stomach—hydrofluoric acid is a dangerous industrial chemical, and acetic and lactic acids are produced in metabolism or by bacteria, not as gastric juice. Therefore, the acid secreted by the stomach is hydrochloric acid.

During digestion, the stomach releases a highly acidic fluid to create an environment that activates enzymes and helps break down food. This acid is hydrochloric acid, produced by parietal cells in the stomach lining. It lowers the pH to around 1–3, which activates pepsinogen to pepsin, denatures proteins, and helps kill ingested microbes. The other acids listed are not secreted by the stomach—hydrofluoric acid is a dangerous industrial chemical, and acetic and lactic acids are produced in metabolism or by bacteria, not as gastric juice. Therefore, the acid secreted by the stomach is hydrochloric acid.

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