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Digestion Unit Day 4

Digestion Unit Day 4. “Never mistake motion for action.” Ernest Hemingway. Objective 7: . Ingestion = taking in of food and nutrients Chewing = mastication of food and nutrients into a bolus using the mouth, teeth and tongue

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Digestion Unit Day 4

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  1. Digestion Unit Day 4 “Never mistake motion for action.” Ernest Hemingway

  2. Objective 7: • Ingestion = taking in of food and nutrients • Chewing = mastication of food and nutrients into a bolus using the mouth, teeth and tongue • Swallowing = movement of bolus past pharynx and into the esophagus to undergo peristalsis.

  3. Obj. 8 • Saliva--made of mostly water w/ ions, proteins, amylase, lysozyme

  4. Obj. 8 Cont. • Saliva’s function is cleanse mouth, moisten food, aid compactions, dissolve for taste, begin digestion.

  5. 9. Gastric Juices: • 3-4 L/day • HCl produced by parietal cells • Zymogenic cells secrete pepsin.

  6. Obj. 10 Regulation • Cephalic phase- sight, smell • Gastric phase-stomach distension and pH • Intestinal phase-food reaches small intestine, stimulates

  7. Objective 11: Absorption in the small intestine • Complete the handout entitled • “Digestion in the the small intestine” to cover the information as to how nutrients are absorbed in the small intestine.

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