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


hard palate- bonesoft palate- muscleuvula


anterior archposterior archpalatine tonsil


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


tooth structure