Bolus, A moist lump of food formed after chewing, Esophagus, A tube that transports food to the stomach, Stomach, An organ that mixes food with acids, Villi, Tiny structures that absorb nutrients, Peristalsis, Wave-like muscle contractions moving food, Chyme, Frothy liquid formed in the stomach, Duodenum, Part of the intestine where bile helps digest fats, Enzymes, Substances that help break down food, Rectum, Stores waste before elimination, Large intestine, Organ where water is absorbed, Mesentery, Tissue that supports and positions digestive organs, Gastrointestinal tract, A long twisting channel that transports food, Protein digestion, Process that begins in the stomach using acids, Total digestion time, Approximately 30–40 hours.

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