anatomy digestive system

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Author:
9spr
ID:
69900
Filename:
anatomy digestive system
Updated:
2011-03-01 14:41:34
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anatomy 9spr digestive system
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Description:
lecture 17
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  1. Components of the digestive system:
    • 1. Digestive tract (alimentary canal): oral cavity,pharynx, esophagus, stomach, small intestine, large intestine
    • 2. Accessory digestive organs: teeth, tongue, salivary glands, liver, biliary ducts and gall bladder, pancreas
  2. Oral Cavity
    • oral mucosa: stratified squamous epithelium (nonkeratinized)
    • oral cavity proper
    • vestibule
  3. palate
    • hard palate- bone
    • soft palate- muscle
    • uvula
  4. Fauces
    • anterior arch
    • posterior arch
    • palatine tonsil
  5. Tongue
    • frenulum
    • extrinsic muscles: move the tongue around - genioglossus
    • intrinsic muscles: change the shape of the tongue
    • anterior 2/3(body): mobile
    • papillae: filiform, fungiform, circumvallate
    • filifoorm: stratified squamous epithelium (keratinized)
    • fungiform: dorsal tastebuds
    • circumvallate: taste buds in wall of trough
    • taste bud structure:
    • posterior 1/3: (root): attatched to hyoid bone
  6. Salivary Glands
  7. Teeth
  8. tooth structure

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