Anhui Medical University Oral cavity The oral cavity extend from lips to pharynx. lined by nonkeratinized stratified squamous epi.,except the gum and hard palate(keratinized). The wall of the oral cavity is made up of CT,muscles and bone. Superior lip The oral cavity contains Gingivae(gums) Superior labial frenulum Palatine raphe the lips,the teeth,the Palatoglossal Hard palate- arch tongue and salivary glands. Palato Soft palate pharyngeal arch Uvula Posterior wall Palatine of oropharynx tonsil Tongue Duct of Lingual submandibular frenulum gland Gingivae(gums) Vestibule Inferior labial Inferior lip frenulum
Anhui Medical University The oral cavity extend from lips to pharynx. lined by nonkeratinized stratified squamous epi., except the gum and hard palate (keratinized). The wall of the oral cavity is made up of CT, muscles and bone. Oral cavity The oral cavity contains the lips, the teeth, the tongue and salivary glands
Anhui Medical University Papillae Foliate ●Filiform papillae ●Fungiform papillae ●Circumvallate papillae a).Filiform papillae:The most numerous.Present over entire surface.small and conical in shape. b).Fungiform papillae:resemble mushrooms,a narrow stalk and a dilated upper part
Anhui Medical University Filiform papillae Fungiform papillae Circumvallate papillae Papillae a). Filiform papillae: The most numerous. Present over entire surface. small and conical in shape. b). Fungiform papillae: resemble mushrooms, a narrow stalk and a dilated upper part. FL Fg Foliate CV
Anhui Medical University c).Circumvallate papillae:The largest papillae. CV is encircled by a deep cleft. The epthelium contains numerous of taste buds. Underlying of the mucosa,there are serous glands Foliate Fg VE:serous glands(von Ebner's)
Anhui Medical University c). Circumvallate papillae: The largest papillae. CV is encircled by a deep cleft. The epthelium contains numerous of taste buds. Underlying of the mucosa, there are serous glands FL Fg Foliate CV VE: serous glands(von Ebner’s)
Anhui Medical University Taste bud 10,000 TBs in your mouth,present in the epi.of fungiform papillae,circumvallate papillae,etc. a onion-shaped structure made up of modified epithelial cells. .a small cavity that opens to the surface through a taste pore. Taste pore .The cells in TB are of 3 basic Microvilli types.Receptor cells or taste cells, Supporting cell supporting cells,which have microvilli on the tip of the cells Taste cell and basal cells. Basal cell Afferent nerve fiber
Anhui Medical University Taste bud 10,000 TBs in your mouth, present in the epi. of fungiform papillae, circumvallate papillae, etc. a onion-shaped structure made up of modified epithelial cells. a small cavity that opens to the surface through a taste pore. The cells in TB are of 3 basic types. Receptor cells or taste cells, supporting cells, which have microvilli on the tip of the cells and basal cells
Anhui Medical University The same taste bud can respond to 4 types of taste (sweet,sour,salty and bitter).The sweet and salty is less sensitive,but bitter is most sensitive. epi the
Anhui Medical University The same taste bud can respond to 4 types of taste (sweet, sour, salty and bitter). The sweet and salty is less sensitive, but bitter is most sensitive