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| Digestion begins in | Mouth
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| 2 functions: | Digestion: chemically & physically break down food into smaller mosequlr units.-----Absorprion: pass digestied food from Digestive system to circulatory system!
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| 2 types of digestion: | -Mechanical: food is mixed, chewed & broken down into smaller units-Chemical digestion: enzymes--protines--change chemical make up of the food
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| Three areas of digestion: | salavary glands:Oral CavityAbdominal cavity
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| Salavary glands: | inside throat area:-submaxilary gland: paired glands-drain digestive juices => -Wharton's duct:base of tongue-Stensen's duct: Paraded Glands: drains at upper mholers-Sublinqual Gland: Drains contents at base of tongue and joins at wharton's duct-
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| Oral Cavity | Dentition pattern: determins diet by size, shape and number of teeth.
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| Rats dentention formula: | Incisor=> 1/1 Canines=> 0/0Premholers=>0/0Mholers=>3/31003
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| Human dentition formula: | 2123
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| Space between cheek and teeth | Vestibule
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| Tongue | attatched to back floor of mouth by lingual frenula (2)-paletine rougi
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| Top of mouth: | hard pallett: supported by bone and ridgessoft pallett: muscle =>postiour is the uvula, which only humans have.
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| Structures that drain into oral cavity | Eustacian tubes drain inner ears ito oral cavity:---external nairs:
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| Tongue: | covered by papilli-3 types: anterour-fungiform-postirour: fillaform, adjecent to mholler teeth-circumvallate=> most posterour and the biggest.
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