Digestion, Part 1 (Mechanical) 1939?

Explains the process of digestion, detailing how food is transformed into simpler substances that can be absorbed into the blood. It begins in the mouth with mastication and saliva mixing, followed by swallowing, where food is pushed into the esophagus and then into the stomach. The muscular contractions in the stomach churn the food, mixing it with digestive fluids to create a liquid mass. The partially digested food then moves into the small intestine, where further digestion and absorption occur through peristalsis and segmentation. The undigested remnants proceed to the large intestine for water absorption before being expelled from the body.

Keywords
digestion, food, elementary canal, mastication, swallowing, esophagus, stomach, peristalsis, small intestine, large intestine, absorption, waste expulsion

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