Salivary Gland Lecture

Question 1

T/F Merocrine glands lose cytoplasm when release secretory product

Answer 1

F

Don’t lose cytoplasm

Question 2

Salivary glands away from oral cavity

Answer 2

Parotid
Mandibular
Sublingual
Zygomatic
Molar

Question 3

Salviary glands within oral cavity

Answer 3

Labial
Lingual
von Ebner's
Buccal
Palatine

Question 4

Example of serous gland (high protein)

Answer 4

Parotid

Question 5

Example of mucous gland (sugar)

Answer 5

Palatine

Question 6

Example of mixed gland (protein + sugar)

Answer 6

Sublingual

Question 7

which gland is most consitant in secreting their product across species

Answer 7

Serous=protein

Question 8

Serous salivary gland secretions include

Answer 8

Salivary amylase
kallikrein
lactoferrin
lysozyme

Question 9

Describe serous salivary glands

• nucleus
• granules
• cell arrangement

Answer 9

Round nucleus at base

Acidophilic granules at apex

Secretory cells arranged in acinus

Question 10

Mucuous salivary gland product

Answer 10

Mucinogen

Question 11

Describe mucous salivary gland

• Nucleus
• Granules
• arrangment of cells

Answer 11

Flat nucleus in base of cell

Frothy cytoplasm due to lightly stained secretory granules

Acinus or “tube-like”

Question 12

Mixed salivary gland

-arrangements

Answer 12

1-individual secretory end pieces of serous and mucous cells secrete into common duct

2-Integrated secretory end pieces of mucous cells covered by cao of serous cells (serous demilune)

Question 13

How do serous cells of mixed gland secrete into lumen

Answer 13

Via intercellular canaliculi running btw mucous cells

Question 14

What surrounds base of secretory sells in salivary glands

Answer 14

Myoepithelial cell (basket cell)

Question 15

Purpose of myoepithelial cell

Answer 15

Prevents increased intraluminal pressure from distending secretory end pieces

Question 16

Hierarchy of salivary duct (from small to large)

Answer 16

Intercalated duct (w/n lobule)
Intralobular duct (w/n lobule)
Interlobular duct (btw lobule)
Lobar duct (btw lobules)
Main duct (opens into body cavity)

Question 17

Intercalated duct

• where
• classify

Answer 17

Directly connected to secretory acinii or tubules

Small simple cuboidal (4-8 cells in cross-section)

Surrounded by myoepithelial

Question 18

Intralobular duct

• describe
• classify

Answer 18

Numerous infoldings of basal cell membrane, looks STRIATED.

• Striations contain mito
• Mito gives E to secrete HCO2, K+ in saliva and extrct Na+, Ca2_ from saliva

Simple columnar

Question 19

Interlobular duct

• classify
• surrounded by

Answer 19

Simple columnar or str cuboidal

Surrounded by CT

Question 20

Lobar duct

-Classify

Answer 20

Str columnar

Surrounded by CT

Question 21

Main duct

-classify

Answer 21

Str epithelium

Surrounded by CT

Question 22

Components in saliva

Answer 22

Digestive enzymes
Antimicrobial agents
Ions
Growth factors
Clotting factors

Question 23

Antimicrobial agents in saliva

Answer 23

Lactoperoxidase and lactoferrin
(made by serous and inercalated duct cells and binds to Fe to stop bacterial metabolism)

Lysozyme
(serous and intercalated duct cells destroy bacterial capsule)

IgA Ab
(Produced by plasma cells then transferred to saliva by secretory cells

Thiocyanate

Question 24

Digestive enzymes in saliva

Answer 24

Amylase
Maltase
Kallikrein
Lipase