3_Body_Basics_and_Alcohol_2011 - HNF 150 Learning...

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HNF 150 Learning Objectives FOLDER: Body Basics and Alcohol CHECKLIST Learning Objectives 1. List the order of the components of the digestive tract and the main digestive actions taking place in each. Accessory Organs That Aid Digestion (starting from mouth down): -Salivary glands: donate a starch-digesting enzyme; donate a trace of fat-digesting enzyme (important to infants) -Liver: Manufactures bile, a detergent-like substance that facilitates digestion of fats -Gallbladders: Stores bile until needed -Bile duct: Conducts bile to S.I. -Pancreatic duct: Conducts pancreatic juice into S.I. -Pancreas: Manufactures enzymes to digest all energy-yielding nutrients. Releases bicarbonate to neutralize stomach acid that enters S.I. Digestive Tract Organs That Contain the Food (starting from mouth down): -Mouth: chews and mixes food with saliva -Esophagus: passes food to stomach -Stomach: adds acid, enzymes, and fluid; Churns, mixes, and grinds food to a liquid mass -S.I.: secretes enzymes that digest carbs, fats, and proteins; Cells lining intestine absorb nutrient into blood and lymph -L.I.: reabsorbs water and minerals; Passes waste (fiber, bacteria, any unabsorbed nutrients) and some water to rectum -Rectum: stores waste prior to elimination -Anus: holds rectum closed; Opens to allow elimination 2. Compare the differences between mechanical digestion and chemical digestion and point out where these processes occur along the digestive tract. a. Mechanical- the digestive tract moves food through it various processing chamber by mechanical means. The mechanical actions include chewing, mixing
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HNF 150 Learning Objectives by the stomach, adding fluid, and moving the tracts contents by peristalsis. After digestion and absorption, wastes are excreted. b. Chemical-begins in the mouth where food is mixed with an enzyme in saliva that acts on carbs. Continues in the stomach where enzymes and acid break down
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3_Body_Basics_and_Alcohol_2011 - HNF 150 Learning...

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