![]() ![]() In the deuodenum, illeum and jejunum (all parts of the small intestines) most of the absorption into the body occurs. After about 2 hours the stomach is usually empty. “Peristaltic waves” also mix or churn the food in the stomach. ![]() In the stomach, acid continues to break down food. It then takes about 4–8 seconds to get from your mouth to your stomach. The answer to this question depends on how you define “digestion.” Both mechanical digestion (chewing) and chemical digestion (salivary amylase) begin in the mouth. ![]() I don’t remember all of the exact numbers, but the following is to the best of my memeory. I’m a medical student and we recently finished a gastro intestinal module.
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