Histology: Salivary Glands

Front 1

All salivary glands are ________ glands and exhibit ___________ secretion.

Back 1

exocrine; merocrine secretion

Front 2

What are the intrinsic salivary glands located?

Back 2

lip, cheek, palate, tongue, floor of mouth

Front 3

The salivary glands on the lip and cheek are ___________ glands.

Back 3

sero-mucous

Front 4

The palatine salivary gland is a ________ gland.

Back 4

mucous

Front 5

Von Ebner glands on the tongue are _______ glands.

Back 5

serous

Front 6

Blandin-Nuhn glands on the anterior lingual portion of the tongue are __________ glands.

Back 6

sero-mucous

Front 7

Tonsilar salivary glands on the tongue are purely _________ glands that open into the __________ ___________.

Back 7

mucous; sulcus terminalis

Front 8

glossopalatine salivary glands on the floor of the mouth are __________ glands.

Back 8

mucous

Front 9

which intrinsic salivary glands are purely mucous?

Back 9

palatine, tonsilar (root of tongue), glossopalatine (floor of mouth)

Front 10

Which intrinsic salivary glands are mixed seromucous glands?

Back 10

superior and inferior labial (lip), buccal (cheek), and Blandin-Nuhn (anterior lingual) gland on the tongue

Front 11

What is the architectural pattern of extrinsic salivary glands?

Back 11

1. stroma -CT capsule with supporting septae that subdivide glands into lobe and lobules
2. parenchyma -gland cells in acini (all cells rest on BM)

Front 12

What are the two portions of the parenchyma of extrinsic salivary glands?

Back 12

1. secretory portion
2. duct portion

Front 13

Flattened cells with flat nuclei which reside inside the basement membrane at the periphery of all 3 types of extrinsic acini; surround all parenchymal cells

Back 13

myoepithelial cells

Front 14

What are the three types of secretory (parenchymal) cells?

Back 14

1. serous
2. mucous
3. mixed (sero-mucous)

Front 15

Which secretory parenchymal cell has a round nucleus and stains dark due to the presence of smooth ER?

Back 15

serous

Front 16

Which secretory parenchymal cell has a flattened nucleus and stains clear?

Back 16

mucous

Front 17

A cap of serous cells on top of mucous cells

Back 17

serous demilune

Front 18

All ducts rest on _______________ ____________________.

Back 18

basement membranes

Front 19

What are the two systems of classification of the duct portion?

Back 19

1. location -intra vs. interlobular
2. function -intercalated, secretory/striated, excretory

Front 20

____________ ducts are within acinar cell groups and include which functional classifications of ducts?

Back 20

intralobular: intercalated and secretory/striated

Front 21

______________ ducts are within the connective tissue between parenchymal regions; larger than intralobular ducts; include excretory ducts.

Back 21

interlobular

Front 22

Intercalated ducts are lined by what type of epithelium?

Back 22

simple cuboidal epithelium

Front 23

Secretory/striated ducts are lined by which type of epithelium?

Back 23

simple columnar

Front 24

The simple cuboidal epithelium of intercalated ducts secretes what 3 things?

Back 24

1. lysozyme
2. lactoferrin
3. the same product as the acini itself

Front 25

Which type of duct is physically attached to the acinus ?

Back 25

intercalated duct

Front 26

Which type of duct is characterized by basal infoldings containing mitochondria for active transport required to produce hypotonic saliva?

Back 26

secretory/striated duct

Front 27

Which type of interlobular duct is characterized by a transition from simple columnar to psuedostratified columnar to stratified columnar epithelium, and the presence of goblet cells that empty into the duct of Stensen.

Back 27

excretory duct

Front 28

Stensen's duct in the major duct of which extrinsic salivary gland?

Back 28

Parotid

Front 29

What are the three extrinsic salivary glands?

Back 29

1. parotid
2. submandibular
3. sublingual

Front 30

What lines Stensen's duct?

Back 30

stratified columnar epithelium

Front 31

The parotid gland is purely ________.

Back 31

serous

Front 32

All ducts of the _____________ gland are highly developed.

Back 32

parotid

Front 33

The ___________________ gland is a mixed gland that is mostly ________.

Back 33

submandibular; serous

Front 34

What's the second largest extrinsic salivary gland?

Back 34

submandibular gland

Front 35

What is the major duct associated with the submandibular gland?

Back 35

Wharton's duct; exits at sublingual caruncle

Front 36

The tiny elevation under tongue where frenulum enters floor of the mouth and through which Wharton's duct of the submandibular gland and Bartholin's duct of the sublingual gland empty

Back 36

sublingual caruncle

Front 37

What type of ducts are most prevalent in the submandibular gland?

Back 37

striated/secretory ducts; there is also an excretory duct similar to that of the parotid and nearly never developed intercalated ducts

Front 38

What is the major duct associated with the sublingual gland?

Back 38

Duct of Bartholin; joins Wharton's duct and empties into the sublingual caruncle beneath tongue

Front 39

What is the duct of Rivinus?

Back 39

Many small ducts associated with the sublingual gland that open into sublingual folds

Front 40

What is the ratio of serous to mucous in the sublingual gland?

Back 40

about 50/50

Front 41

Approximately how much saliva is produced each day?

Back 41

750-1500 ml/day

Front 42

The sublingual gland has poorly developed ________ and _________ ducts but a prominent excretory duct.

Back 42

poorly developed intercalated and secretory/striated

Front 43

control of salivary secretion is __________________

Back 43

parasympathetic

Front 44

What is the chemical composition of saliva?

Back 44

99% water
enzymes: lipase and amylase
electrolytes: Nat+, HCO3-, Cl-
other: IgA, lysozyme, lactoferrin, epidermal growth factor, mucous