Histo of Salivary glands

Parotid gland: %, type?

where is it?

largest, serous secretion: 25%

Bilateral in front of ear

Stensen’s duct

Runs from parotid gland to oral cavity opposite of MB Cusp of Max 1st perm molar

submandibular gland

2nd largest, produces 60% of all salivary

Mixture of serous and mucous, mostly serous

Wharton’s duct enters oral cavity at sublingal caruncle

sublingual gland

smallest: produces 5%

mixed but mainly mucous

Duct of bartholin enters oral cavity at sublingual caruncle

Von ebner glands

Base of circumvallate papilla: serous

watery secretions that wash out taste buds

MInor salviary glands are what secretion?

Mucous, except for Von Ebner which is serous

Major glands are where? capsule or no capsule

minor glands are? capsule or no capsule?

major: outside oral cavity: large, encapsulated

minor: small in CT of oral mucuos membrane, no capsule

Sort these: Acini, Lobules, Lobes, Individual acinar cells, gland

Gland > lobes > lobules > acini > individual acinar cell

Parenchyma of salivary tissue?

supporting CT?

Acini (functional unit, AKA alveolu) and ducts

collagen rich septa contain blood vessels, nerves, lymphoid tissue

lobules are separated by?

collagenous septa

Acini

cluster of pyramidal cells, nucleus is basally placed

secreted into intercalated duct

clusted cradled by myoepithelial cells

Serous acini

mucous acini

amylase within zygmogen granules, secretion is watery

secretion is viscous mucin within mucigen vesicles

ducts (3)

Become larger as they?

intercalated: drains secretions from individual acini (cuboidal)

Striated duct: drains secretions from many intercalated ducts at level of lobules (columnar, serrated basal surface for increased SA)

Striated ducts empty into excretory duct: interlobular

• stensons: parotid

• Submandibular: wharton

• Sublingual: many small “bartholin”

progress towards oral cavity

serous demilune, apart of ? where is it?

mixed acini:

Pyramidial mucous cells form mucous acinus

Mucous acinus capped by a half moon shaped structure of serous cells

myoepithelial cells

basket cells (cradle acinus)

epithelial cells with muscle-like contractile property

central body cell with numerous finger-like dendritic processes that embrace acinus

When dendritic processes contract, acinus is squeezed releasing saliva into intercalated duct

Fordyce Granules

Ectopic sebaceous glands found in lips (vermillion border) and cheeks (buccal mucosa)

highest concentraiton of intraoral salvary glands

soft palate

Distribution of minor salivary glands

palate: 60%

tongue: 10%

lips 10%

cheeks 10%

retromolar 10%

major in total produces what %?

85-90%