Digestive Web - The Digestive System Figure 14.1 Ingestion...

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Unformatted text preview: The Digestive System Figure 14.1 Ingestion taking in food Digestion breaking food down physically and chemically Absorption movement of nutrients into bloodstream Defecation rids body of indigestible waste Organs of the Digestive System Two main groups Alimentary canal (gastrointestinal or GI tract) continuous coiled hollow tube Accessory digestive organs tear and crush food (teeth) or secrete enzymes into lumen Organs of the Alimentary Canal, i.e. the tube Mouth Pharynx Esophagus Stomach Small intestine Large intestine Anus Accessory Digestive Organs Teeth mash up food mechanically Salivary glands Pancreas Liver Gallbladder Secrete stuff into the tube Mouth (Oral Cavity) Figure 14.2a Entrance to digestive system Food moistened w/ saliva and masticated (chewed) bolus = ball of moistened food Starch (polysaccharide) digestion starts Baby (deciduous) and Permanent Teeth Figure 14.9 Teeth: incisors bite; canines tear; molars grind (32 adult; 20 juvenile) Salivary glands secrete saliva into oral cavity Saliva = mix of mucus and serous fluids Contains enzymes that digest starch Dissolves chemicals for taste binds and lubricates food ( bolus ) back to the tube!! Deglutition (Swallowing) keep your eye on the epiglottis!...
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This note was uploaded on 01/13/2012 for the course ANATOMY 10 taught by Professor Prestongalusky during the Fall '11 term at Riverside Community College.

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Digestive Web - The Digestive System Figure 14.1 Ingestion...

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