ANAT 216 Lecture Notes - Lecture 11: Dentin, Periodontal Fiber, Incisor
13 Oct 2016
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Digestive system: lecture 1 (reading material: chapter 18: pages 477-478; chapter 25: pages 658-660; 664-668) Digestive tract (alimentary canal): mouth, oral cavity, pharynx, esophagus, stomach, small intestine, large intestine, anus. Accessory digestive organs: teeth, tongue, salivary glands, liver, biliary ducts and gall bladder, pancreas. Oral cavity (buccal cavity; "mouth"): oral mucosa - stratified squamous epithelium (nonkeratinized, oral cavity proper, vestibule, palate: Extrinsic - main movements: genioglossus intrinsic - alter shape. Papillae: filiform, fungiform, circumvallate filiform (elongated) - stratified squamous epithelium (keratinized: give roughness to tong fungiform (mushroom-shaped) - dorsal tastebuds tastebuds are on the fungiform larger. Circumvallate (dome-shaped) -taste buds in wall of trough. Bery large taste bud structure taste bud in gutter of papillae tase cells are gustatory cells. Sit on side wall to reach the gutter. Basal cells: produce more taste buds as they degenerate. Posterior 1/3: (root): attached to hyoid bone, not mobile lingual tonsils: salivary glands: Minor salivary glands (lips, cheeks, palate) little.
