Oral mucosa 2

The highest turnover rate of any oral mucosa is :

• Junctional epithelium

• Cheek or buccal mucosa

• Floor of the mouth

• Alveolar Mucosa

Junctional epithelium is unique as it has

• Desmosomes

• Two basal lamina

• Tight junctions

• Responsive to inflammation

Desmosomes differ from tight junction because

• do no allow molecules to pass through

• allow molecules to pass in the intercellular space

• are non-communicating

• lack proteins

Desmosomes are made-up of integral protein :

• Claudin

• Integrin

• Selectin

• Connexin

The junction between skin of lips and inner side of lips is:

• Junctional epithelium

• Mucogingival junction

• Mucocutaneous junction

• Dentogingival junction

Boundary between attached gingiva and alveolar mucosa is known as:

• Mucocutaneous junction

• Mucogingival junction

• Dentogingival junction

• Mucoperiosteal junction

What is the key difference between oral mucosa and skin epithelium?

• Skin epithelium is less vascularized compared to oral mucosa.

• Oral mucosa generally lacks sebaceous glands.

• Skin epithelium is typically non-keratinized.

• Skin epithelium does not have sensory functions.

What distinguishes orthokeratinized from parakeratinized oral mucosa?

• Presence of nuclei in orthokeratinized mucosa

• Presence of nuclei in parakeratinized mucosa

• Absence of nuclei in parakeratinized mucosa

• Both types lack nuclei