A patient presents at the walk-in clinic complaining of stomach pain that is relieved by eating. The nurse suspects an ulcer. How would the nurse explain the acid in the stomach to the patient?
A) Hydrochloric acid is secreted by glands in the stomach in response to the presence or anticipated ingestion of food.
B) As the stomach digests food it turns part of the digested food into acid.
C) Our body makes hydrochloric acid for the digestion of the food we eat.
D) Acid is secreted by cells in the first part of the small intestine, and when we eat, the acid flows into the stomach.
Ans: A
Feedback: The stomach, which stores and mixes food with secretions, secretes a highly acidic fluid in response to the presence or anticipated ingestion of food. This fluid, which can total 2.4 L/day, can have a pH as low as 1 and derives its acidity from hydrochloric acid (HCl) secreted by the glands of the stomach. The stomach does not turn food into acid; and the acid does not flow backwards into the stomach from the small intestine. Option C is incorrect because it is not complete.
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