Digestion unit day 4
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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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Digestion unit day 4

Digestion Unit Day 4

“Never mistake motion for action.”

Ernest Hemingway


Objective 7

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.


Obj 8

Obj. 8

  • Saliva--made of mostly water w/ ions, proteins,

    amylase,

    lysozyme


Obj 8 cont

Obj. 8 Cont.

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


9 gastric juices

9. Gastric Juices:

  • 3-4 L/day

  • HCl produced by parietal cells

  • Zymogenic cells secrete pepsin.


Obj 10 regulation

Obj. 10 Regulation

  • Cephalic phase- sight, smell

  • Gastric phase-stomach distension and pH

  • Intestinal phase-food reaches small intestine, stimulates


Objective 11 absorption in the small intestine

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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