Question

question 3
what is the main physiological function of the stomach?
to absorb vitamins.
to disinfect the food.
to digest sugars.
to absorb proteins.

Explanation:

The stomach secretes gastric acid (hydrochloric acid) which has a high - acidity level. This acid helps in disinfecting the food by killing many of the bacteria and other pathogens present in the ingested food. Absorption of vitamins mainly occurs in the small intestine. Digestion of sugars starts in the mouth with salivary amylase and continues in the small intestine. Protein absorption also mainly occurs in the small intestine after the proteins are broken down into smaller peptides and amino - acids in the stomach and small intestine.

Answer:

To disinfect the food.