L42. Oral Mucosa

Question 1

Name the 4 layers of oral epithelium.

Answer 1

Stratum : 
germinativum
spinosum
granulosum
corneum

Question 2

Describe the histological difference between keratinised and non-keratinised epithelium.

Answer 2

Keratinised has a thick upper layer (pink) which non-keratinised does not have.

Question 3

What are melanocytes involved in?

Answer 3

Pigment

Question 4

What are merkel cells associated with?

Answer 4

mechanoreceptor neurons

Question 5

What are Langerhans cells described as?

Answer 5

Dendritic cells - antigen presenting.

Question 6

Name and give the location of the 4 tongue papillae types.

Answer 6

Filiform and fungiform (deeper) are present on the anterior 2/3 of the tongue.
Circumvallate papillae present in a “V” at the back of the tongue.
Foliate papillae along tongue’s lateral border.

Question 7

Give the alternative name and symptoms of geographical tongue.

Answer 7

Benign migratory glossitis
red or white margins
no filiform papillae