Oral Mucosa

cells mature moving from base to outer surface forming a protective, waterproof, outer layer

Keratinization

Keratinization helps to shield from what?

dehydration

What 3 Functions does Oral Mucosa have?

• Protect

• Secrete

• Absorb

What are the 3 categories of the oral mucous membrane?

• Masticatory

• Lined

• Specialized

Type of oral mucosa associated with mastication; gingiva, hard palate

Masticatory Oral Mucosa

Type of oral mucosa that’s the largest category; includes soft palate, under tongue, side of cheeks, (usually not keratinized)

Lining Oral Mucosa

Type of oral mucosa found on dorsum side of tongue; includes takse buds

Specialized Oral Mucosa

Term for connective tissue attachment; located under tongue at base

Lingual Frenum

Term for opening for two of the salivary glands (submandibular and sublingual)

Wharton’s duct openings

Term for horizontal roll tissue at side of Wharton’s ducts

Plica sublingualis

Term for bluish, blister-like lesion sometimes caused by trauma to area of oral cavity; lip salivary gland

Mucocele

Term for paratoid gland empties into mouth; located at side of cheek opposite maxillary molars

Stensen’s duct openings

Term for yellow spots located on lips or on oral mucosa just inside mouth; sebaceous glands

Fordyce Granules

Term for highly specialized papillae; located at posterior border of tongue; V-shaped; 8 - 10 in number

Circumvallate Papilla

Term for small serous glands located at base of

circumvallate papilla on dorsal side of tongue; saliva acts as food solvent

Von Ebner’s glands

Term for mushroom-shaped papillae scattered throughout the tongue

Fungiform Papillae

Term for spike-shaped papilla. Gives tongue ability to grasp, numerous and heavily keratinized, Covers anterior 2/3rds of tongue

Filiform Papillae

Term for papillae located on lateral posterior border of tongue, contains taste buds

Foliate Papillae

Formed from epithelium that lines early mouth

Salivary glands

What are the two types of salivary gland secretion?

Serous and Mucous

Thin, watery saliva; salivary amylase breaks

down starch in mouth

Serous secretion

Thicker saliva; allows adhering lubricates oral cavity

Mucous

What are the 3 major salivary glands?

Parotid glands

• Largest gland

• Located in front of and below ears

• Secretes serous saliva only; makes up to 25% of total saliva

• Empties into mouth through Stensen’s duct

• Gland involved in mumps

Parotid gland

Gland beneath posterior border of tongue. Secretes serous and mucous (serous more numerous); 65% of total saliva**

• Empties through Wharton’s duct

Submandibular gland

Located anterior to submandibular gland; lies in floor of mouth under tongue. Empties through Wharton’s duct

Sublingual gland

Term for salivary stone

Sialolith