Oral Histology Salivary Glands

Front 1

What are glycoproteins involved with in protections?

Back 1

1. lubrication of food, mucosa, teeth
2. waterproofing of mucosa: mucin (a glycoprotein)
3. barrier against irritants and toxins in food and microorganisms: mucin
4. lavage/washing action removed bacteria from teeth

Front 2

What purpose does phosphate and bicarbonate serve in saliva?

Back 2

1. Maintain pH unsuitable for bacterial colonization.
2. Neutralize acid produced by bacteria.
This also helps in neutralizing esophageal contents.

Front 3

What functions does salive have in digestion?

Back 3

1. Formation of food bolus: water
2. Neutralization of esophageal contents: phosphate and bicarbonate
3. Digestion of carbohydrates: amylase
4. Digestion sof fats: lipase made by serous glands of Von Ebner

Front 4

What functions does saliva have in taste?

Back 4

1. solution of molecules: water
2. taste bud growth and maturation: gusten

Front 5

What functions does saliva have in antimicrobial activity?

Back 5

1. lysozyme: hydrolyzes bacterial cell walls
2. Lactoferring: binds iron and withholds it from bacteria
3. salivary peroxidase: inhibits growth of bacteria by generating oxidizing agents
4. IgA antibody: agglutinates bacteria and inhibits human immunodeficiency virus

Front 6

What purpose does saliva have in maintaining tooth integrity?

Back 6

Calcium and phosphate promote maturatin and remineralization.

Front 7

Saliva plays what type of role in regulatory proteins?

Back 7

Production of growth factors and other regulatory proteins such as nerve growth factor and vasoactive peptides.

Front 8

What can xerostomia cause and causes of it(dry mouth, insufficient saliva)?

Back 8

1. Causes of serostomia: aging, medications, radiation therapy, systemic diseases
2. Effects of serostomia: difficulty eating, speaking, wearing dentures, oral mucosal ulcers (sores); increased caries, candidosis

Front 9

What is required for the development of salivary glands?

Back 9

1. A downgrowth of oral surface epithelium
2. Ectomesenchyme

Front 10

What is stroma?

Back 10

Connective tissue framework of salivary glands

Front 11

What is significance of stroma?

Back 11

1. Capsule of dense irregular connective tissue
2. Septa of fibrous connective tissue divide gland into lobes and lobules
3. connective tissue carries blood vessels, nerves and ducts

Front 12

What is parenchyma?

Back 12

Functional part of salivary glands.

Front 13

What is significant of parenchyma?

Back 13

1. Secretory units (alveoli)
a. spherical unit (acinus)
b. tubule- composed of mucous cells. Larger than central lumen
c. tubule of mucous cells capped by a serous demilune. Secretion of serous cells reaches the central lumen via intercellular canaliculi

Front 14

What are myoepithelial cells?

Back 14

secretory system, (gleeking- shooting of saliva); somewhat involved in tumors

Front 15

Serous cells secrete by?

Back 15

Exocytosis (merocrine mode) into the central lumen.

Front 16

Parotid gland summary

Back 16

ducts within lobules are intercalated and striated; ducts between are interlobular; secretory units are all serous

Front 17

submandibular glands summary

Back 17

ducts within lobules intercalated and striated; ducts between interlobular (all are); more serous than mucous

Front 18

sublingual glands summary

Back 18

ducts within lobules are intralobular; ducts between interlobular; more mucous than serous

Front 19

minor glands

Back 19

ducts within intralobular, ducts between interlobular; secretes mucous excepts serous glands of Von Ebner

Front 20

Intercalated ductos of the parotid and submandibular glands produce what?

Back 20

lysozyme and lactoferrin

Front 21

Striated ducts of the parotid and submandibular glands do what?

Back 21

reasorb sodium and excrete potassium

Front 22

Mucous secretions secretions are?

Back 22

thick and sticky, consisting of glycoproteins and incrased carbohydrates and decreased enzyme content compared to serous secretion