Food Digestion So what happens to that Quarter Pounder with Cheese, Large Fries and Chocolate Milk Shake

Understanding Digestive Enzymes Digestion is the breakdown and absorption of food ABSORPTION ONLY TAKES PLACE IN THE SMALL INTESTINE

Classified by their Substrates Protease & Peptidase Lipases Carbohydrase Break proteins into amino acids Split fat into 3 fatty acids Split carbs into smaller sugars - Glucose

Digestion occurs at the Oral Cavity Stomach Duodenum Jejunum Teeth Peristalsis Villi Tongue Acids Enzymes Saliva Enzymes Neutralizers

Digestive Enzymes are produced Salivary Glands Stomach Pancreas Small Intestine

Teeth Mechanical Mastication End Product Ground Food Chemical None Affects None

Tongue Mechanical Moves food back and forth End Product Bolus Chemical None Affects None

Hard Palate Mechanical Helps to shape bolus End Product Round Bolus Chemical None Affects None

Salivary Glands Mechanical Moistens End Product Moist Bolus Chemical Amylase Affects Polysaccharides Starches

No Mechanical or Chemical change to Food. Pushes Food Via Peristalsis Pharynx Mechanical End Product No Mechanical or Chemical change to Food. Pushes Food Via Peristalsis Chemical Affects

No Mechanical or Chemical change to Food. Pushes Food Via Peristalsis Esophagus Mechanical End Product No Mechanical or Chemical change to Food. Pushes Food Via Peristalsis Chemical Affects

Stomach End Product Chyme Mechanical Churns via Peristalsis Three Muscles Chemical Pepsin Gelatinase Gastric Amylase Gastric Lipase Rennin HCl Gastrin Affects Protein Breaks down Muscle Collagen Breaks down Butter Fats Milk Fats Milk Proteins Activates Enzymes/Breaksup Lg Food Stimulates more HCl Production

Liver Mechanical None End Product Still Chyme Chemical Bile Affects Emmulsifies Fat

Gall Bladder Mechanical None Bile does the Breakdown End Product Still Chyme Chemical Stores Bile CCK Affects Released with Lg Fat quantities Stimulates Gall Bladder to Void NOTE: Bile Released INTO the Duodenum!

NOTE: Pancreatic Juices Released INTO the Duodenum! Pancreas Mechanical None End Product Chyme Chemical Bicarbonates Trypsin Chymotrypsin Pancreatic Amylase Steapsin Insulin Secretin Affects Neutralizes Stomach Acids Proteins Polysaccharides Fats Regulates Blood Glucose Stimulates NaCO2 Production NOTE: Pancreatic Juices Released INTO the Duodenum!

NOTE: SI Enzymes found in Jejunum! Small Intestine Mechanical Pushes Chyme Along Peristalsis Water Absorption End Product Chyme NutrientAbsorption Chemical Pepidase Lactase Sucrase Amylase Affects Proteins Milk Fats Sugars Polysaccharides NOTE: SI Enzymes found in Jejunum!

Large Intestine Mechanical Absorbs Water Absorbs Salts End Product Feces Chemical Affects Bacterial Action to Break down some Cellulose Bacterial Action to regulate fluidity of Feces Water Absorption Regulation: Diarrhea vs Constipation

Gastric Juices Production All the enzymes are produces by the Stomach End Product Pepsin HCl Actions HCl Converts Pepsinogen into Pepsin Pepsinogen is stimulated by Gastrin Gastrin is stimulated by Smell, Sight, Taste Thinking

Pancreatic Juices Production All the enzymes are produces by the Pancreas Actions Secretin important to stimulate NaCO2 production to neutralize the Strong Stomach Acids Prevents burning away of Duodenum