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Oral Mucosa & Gingival Tissues Quiz

(Embryology & Histology)

Contributed by:

Andrea and Cristal
SDH  PRCC, MS
  1. What are the functions of the oral mucosa?

a.

b.

c.

d.

2. What are the 3 types of oral mucosa? 

3.

   lips/cheeks, floor of mouth, underside tongue, soft palate, alveolar mucosa.

A. Lining mucosa

    gingiva & hard palate.

B. Masticatory mucosa

   dorsum & lateral of tongue.

C. Specialized mucosa

   non keratinized.

 

  keratinized.

 

   not firmly attached to underlying bone.

 

   keratinized.

 

   can be stretched or compressed.

 

   firmly attached to underlying bone.

 

   Fordyce’s granules 80% adults-sebum

 

  chewing.

 

 

  1. Filiform papilla:  
  1. Fungiform papilla:  
  1. Foliate papilla:
  1. Circumvale papilla:  
  1. Discuss geographic tongue:
  1. Discuss Black hairy tongue:
  1. What is chromogenic?  
  2. What are the 3 types of epithelium of the oral mucosa and their function?
  1. The cell of the mucosa that produces keratin:  
  1. 3 types of nonkeratinocytes:

 

   located in the basal layer of gingival epithelium. Fx: touch receptors.

A. Langerhans

   ideal location to make contact w/ bacteria & establish a mechanism to protect the body.

B. Merkle’s cell

   produce melanin in basal layer of gingival epithelium. Inject melanin into keratinocytes.

C. Melanocyte


  1. Most common type of epithelium in the oral cavity:  

15. 3 layers of non-keratinized epithelium:

    1.  
    2.  
    3.  
  1. Least common type of epithelium in the oral cavity:   

17. 4 layers of orthokeratinized epithelium:

    1.  
    2.  
    3.  
    4.  
  1. The parakeratinized epithelium has the same layers as orthokeratinized, but the keratin layer is different in that:   
  1. All forms of epithelium have this layer of connective tissue that lies beneath surface epithelium or oral mucosa:  
  1. Lamina Propria contains what fibers?   
  1. Discuss the histological differences in:

a. Labial/buccal mucosa:  

b. Alveolar mucosa:  

c. Floor of mouth & ventral tongue surface:  

d. Soft palate:  

e. Attached gingiva:  

f. Hard palate:  

 

  1. Renewal Rates:

    junctional epithelium

A.  10-14 days

    taste buds

B. 10 days

    buccal / labial

C.  4-6 days

    attached gingiva

 


  1. Discuss the tissue repair process after injury:

23.What are the following clinical signs of:   

            Reduction in appearance of stippling

            Increased amounts of Fordyce’s granules

            Enlarged lingual veins (under tongue) & form varicosities

            Number of taste buds reduced

            Slower collagen turnover – fibroblasts decrease in amount

            In basal layer mitosis activity reduced

  1. List the types of gingival tissues:
    1.  
    2.  
    3.  
  1. What is COL space?
  1. What are the clinical/ histological features of attached gingiva:  
  1. What are the clinical/ histological features of free gingiva:  
  1. List the dentogingival junctional tissues:
  1. Sulcular epithelium:
  1. Junctional epithelium:

Disclaimer: These notes were copied and pasted from files sent to me by Andrea.  They have not been reviewed for errors. You are responsible for checking out the information to verify the accuracy. This site, Amy Nieves and Andrea are not responsible for typographical errors.

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