anatomy digestive system


Components of the digestive system:


1. Digestive tract (alimentary canal): oral cavity,pharynx, esophagus, stomach, small intestine, large intestine2. Accessory digestive organs: teeth, tongue, salivary glands, liver, biliary ducts and gall bladder, pancreas


Oral Cavity


oral mucosa: stratified squamous epithelium (nonkeratinized)oral cavity propervestibule


palate


hard palate- bonesoft palate- muscleuvula


Fauces


anterior archposterior archpalatine tonsil


Tongue


frenulumextrinsic muscles: move the tongue around - genioglossusintrinsic muscles: change the shape of the tongueanterior 2/3(body): mobilepapillae: filiform, fungiform, circumvallatefilifoorm: stratified squamous epithelium (keratinized)fungiform: dorsal tastebudscircumvallate: taste buds in wall of troughtaste bud structure: posterior 1/3: (root): attatched to hyoid bone


Salivary Glands


Teeth


tooth structure