<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["en", "en"].<end_of_turn>
<start_of_turn>user
Which acid helps digestion in the stomach?<end_of_turn>
<start_of_turn>model
Hydrochloric acid (HCl) is the primary acid that helps digestion in the stomach. The cells lining the stomach wall, particularly the parietal cells, secrete hydrochloric acid. This gastric acid serves several important functions in the digestive process:

1. Activation of Enzymes: Hydrochloric acid helps activate pepsinogen, an inactive enzyme produced by the stomach. Once activated, pepsinogen becomes pepsin, which plays a crucial role in breaking down proteins into smaller peptides.

2. Optimal pH for Enzymatic Activity: The acidic environment created by hydrochloric acid is essential for the optimal activity of digestive enzymes. Many digestive enzymes, including pepsin, work most efficiently in an acidic pH range.

3. Killing Pathogens: The highly acidic environment of the stomach helps to kill or inhibit the growth of potentially harmful microorganisms that may be present in ingested food.

4. Facilitation of Nutrient Absorption: Hydrochloric acid helps break down food particles into smaller, more digestible forms. This facilitates the absorption of nutrients, such as minerals and certain vitamins, in the small intestine.

The secretion of hydrochloric acid is tightly regulated to maintain the balance of acidity in the stomach. Disorders or imbalances in the production of stomach acid can lead to digestive issues and impact overall digestive health.<end_of_turn><eos>