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The Digestive System The Digestive System The Digestive System The Mouth The Digestive System The Mouth •Physical Digestion The Digestive System The Mouth •Physical Digestion •Chewing The Digestive System The Mouth •Physical Digestion •Chewing •Chemical Digestion The Digestive System The Mouth •Physical Digestion •Chewing •Chemical Digestion •Saliva starts starch digestion The Digestive System The Digestive System Esophagus The Digestive System Esophagus •Connects mouth to stomach The Digestive System The Digestive System Stomach The Digestive System Stomach •Chemical digestion The Digestive System Stomach •Chemical digestion •Enzymes and hydrochloric acid The Digestive System Stomach •Chemical digestion •Enzymes and hydrochloric acid •begin protein digestion The Digestive System The Digestive System Liver The Digestive System Liver •Produces bile to emulsify fat The Digestive System The Digestive System Pancreas The Digestive System Pancreas •Produces most digestive enzymes The Digestive System Pancreas •Produces most digestive enzymes •These enzymes digest carbohydrates, proteins, and fats The Digestive System The Digestive System Duodenum The Digestive System Duodenum •First part of small intestine The Digestive System Duodenum •First part of small intestine •Receives bile from liver The Digestive System Duodenum •First part of small intestine •Receives bile from liver •Receives enzymes from pancreas The Digestive System Duodenum •First part of small intestine •Receives bile from liver •Receives enzymes from pancreas •Adds more enzymes The Digestive System The Digestive System Small Intestine The Digestive System Small Intestine •Chemical Digestion completed The Digestive System Small Intestine •Chemical Digestion completed •Proteins digested into amino acids The Digestive System Small Intestine •Chemical Digestion completed •Proteins digested into amino acids •Carbohydrates digested into simple sugars The Digestive System Small Intestine •Chemical Digestion completed •Proteins digested into amino acids •Carbohydrates digested into simple sugars •Fats digested into fatty acids and glycerol The Digestive System Small Intestine •Absorption of all nutrients into bloodstream The Digestive System Small Intestine •Absorption of all nutrients into bloodstream •amino acids The Digestive System Small Intestine •Absorption of all nutrients into bloodstream •amino acids •simple sugars The Digestive System Small Intestine •Absorption of all nutrients into bloodstream •amino acids •simple sugars •fatty acids and glycerol The Digestive System Small Intestine •Absorption of all nutrients into bloodstream •amino acids •simple sugars •fatty acids and glycerol •vitamins and minerals The Digestive System The Digestive System Large Intestine The Digestive System Large Intestine •reabsorbs water back into bloodstream The Digestive System Large Intestine •reabsorbs water back into bloodstream •healthful bacteria make some vitamins from waste The Digestive System The Digestive System Rectum The Digestive System Rectum •Temporarily stores wastes before evacuation The Digestive System The Digestive System Anus The Digestive System Anus •Exit for waste The Digestive System Anus •Exit for waste •Kept closed by anal sphincter muscle Digestion Summary Physical Chemical Absorption Mouth Chewing none Stomach none Small Intestine Large Intestine Fats emulsified none Saliva digests starch Begin protein digestion All digestion completed none none All nutrients absorbed Water reabsorbed Enzyme Summary Digest fats Mouth Digest Digest carbohydrates proteins Yes - saliva no Stomach no no Small Intestine Large Intestine Yes - many Yes- gastric juice Yes - many no no no no Yes End of Digestion Summary
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