digestive system lecture

digestive system lecture - activated to pepsin Activated...

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The Digestive system Chapter sections – 41.2-41.6
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Food is processed in the digestive system – there are four mail stages of food processing Injestion Digestion – mechanical and chemical (hydrolytic enzymes) Absorption Elimination
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Our digestive system consists of an alimentary canal and accessory glands
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Mammalian digestive system Ingestion and digestion in the mouth Saliva – -protects the lining of the mouth and lubricates the food - Kills many bacteria -Contains hydrolytic enzymes that begin chemical digestion peristalsis
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Acid reflux
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Mammalian digestive system (cont.) Digestion continues in the stomach
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Positive feedback Pepsinogen in stomach becomes
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Unformatted text preview: activated to pepsin Activated pepsin activates other pepsins Mammalian digestive system (cont.) Digestion is completed and absorption begins in the small intestines The structure of the small intestine gives it a very large surface area Hepatic portal vein Mammalian digestive system (cont.) Large intestine recovers water and eliminates waste Mammalian digestive system in a nut shell 1 Ingestion and 2 digestion in the mouth 2 Digestion continues in the stomach 2 Digestion is completed and 3 absorption begins in the small intestines Large intestine recovers water and 4 eliminates waste...
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This note was uploaded on 04/22/2008 for the course EBIO 1040 taught by Professor Didomenico during the Spring '08 term at Colorado.

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digestive system lecture - activated to pepsin Activated...

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