Histology of the Oral Cavity and Salivary Glands Flashcards
2 divisions of digestive system
- Alimentary canal
- Associated glands
Components of the alimentary canal
- Lips
- Oral cavity
- Oesophagus
- Stomach
- Duodenum
- Small intestine
- Appendix
- Colon
- Anal canal
Associated glands of the digestive system
- Salivary glands
- Liver with gallbladder
- Pancreas
What epithelium is oral mucosa?
Non-keratinised stratified squamous epithelium
What keep the oral mucosa moist?
Accessory salivary glands found deep to the mucosal surface
Where in the oral cavity is the epithelium different to typical oral mucosa, and what is present instead?
- Hard palate + gingiva
- Keratinised stratified squamous epithelium
4 types of lingual papillae
- Filiform papillae
- Foliate papillae
- Fungiform papillae
- Circumvallate papillae
What epithelium is on each type of lingual papillae?
- Filiform = keratinised
- Foliate = non-keratinised
- Fungiform = non-keratinised
- Circumvallate = non-keratinised
Which lingual papillae contain taste buds?
Foliate, fungiform + circumvallate
How do teeth attach to the surrounding bone?
Periodontal ligament attaching to bone and decalcified root of tooth (gomphosis joint)
Types of salivary gland and what type of saliva they secrete
- Parotid gland = serous (watery)
- Submandibular gland = mostly serous, partially mucous
- Sublingual gland = almost totally mucous
Components of the major salivary glands
- Acinus
- Intercalated duct
- Striated duct
- Excretory duct
How are secretions of salivary acinar cells forced into the lumen?
Myoepithelial cells surround the acini and contract
