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Tooth Structure. Deciduous & Permanent Teeth. 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.

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Presentation Transcript
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 6
Obj. 6
  • What structural features of the wall of the stomach & small intestine enhance digestion?
obj 61
Obj. 6
  • What structural features of the wall of the stomach & small intestine enhance digestion?
    • Rugae
    • Villi & Microvilli
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.
obj 12 role of bile bicarbonate ions in pancreatic juice
Bile:

Emulsify Fats

Turns chyme brown

Bicarbonate Ions

Neutralizes the acidic chyme

Obj. 12Role of Bile & Bicarbonate Ions in Pancreatic Juice
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