Oral Mucosa Flashcards
(30 cards)
What are the 4 functions of oral mucosa?
- Protection
- Secretion
- Absorption
- Sensation/taste
What are the 2 types of protection that oral mucosa provides?
Mechanical and immune
What are the 3 types of oral mucosa?
- Lining mucosa
- Masticatory mucosa
- Gustatory mucosa
What type of oral mucosa is non-keratinised?
Lining mucosa
What type of oral mucosa is para-keratinised?
Masticatory mucosa
What type of oral mucosa is keratinised?
Gustatory mucosa
Where is lining mucosa found?
Loose lamina propria, wide submucosa, and bottom of tongue
Where is masticatory mucosa found?
Whole of palate and alveolar bone surrounding the teeth
What does para-keratinised mean?
Keratinisation is so rapid that cells keep their nuclei
What mucosa is mobile?
Lining mucosa
What mucosa has no mobility, and is hard and tight?
Masticatory mucosa
What mucosa is subject to friction and pressure?
Masticatory mucosa
Where is a very thick lamina propria found and what does it do?
Masticatory mucosa
-Connects mucosa to bone
Where is gustatory mucosa found?
ONLY on the dorsum of tongue
Where are papillae found and what specific function can they have?
Gustatory mucosa.
Can have taste function.
What are the 4 layers of keratinised/parakeratinised oral mucosa?
- Keratinised layer
- Granular layer
- Prickle cell layer
- Basal layer
What are the 4 layers of non-keratinised oral mucosa?
- Superficial layer
- Intermediate layer
- Prickle cell layer
- Basal layer
What layer of oral mucosa produces keratin?
Granular layer
What is the mucogingival junction?
The connection between the alveolar mucosa and the gingiva
What are non-keratinocytes?
Cells that don’t contain keratin
What are the 3 types of non keratinocytes?
- Melanocytes
- Merkel cells
- Langerhans cells
What papillae contain taste buds?
Fungiform papillae
Where are fungiform papillae most abundantly found?
At tip and sides of tongue
What papillae cover the majority of the tongue?
Filiform papillae
