Basic Oral Histology

Question 1

Is Oral Mucosa made up of keratinised or non-keratinised epithelium?

Answer 1

Both!!

Keratinised epithelium in the mouth: palate, gingiva, dorsal sulcus of tongue
Everything else is non-keratinised

Question 2

What are the layers in the non-keratinised oral mucosa?

Answer 2

From top:
1. Superficial layer
2. Intermediate layer
3. Basal layer

(Lamina propria underneath)

Question 3

Layers in keratinised oral mucosa?

Answer 3

1. Corneal layer (keratin layer)
2. Granular layer
3. Spinous layer
4. Basal layer

Question 4

What are the 2 types of keratinised oral mucosa?

Answer 4

1. Ortho-keratinised (thin corneal layer)
2. Para-keratinised (thick corneal layer)

Question 5

What are rete ridges?

Answer 5

Epithelial projections into lamina propria