salivary glands Flashcards
1
Q
major salivary glands
A
- parotid
- submandibular
- sublingual
2
Q
name of duct for parotid gland
A
stenson’s duct
3
Q
name of duct for submandibular gland
A
wharton’s duct
4
Q
all salivary glands develop from
A
oral epithelium
5
Q
glands continue to grow until what age
A
2 years of age
6
Q
salivary gland ductal system
A
- secretory end piece (acini)
- intralobular:
1. intercalated
2. striated - interlobular
3. excretory
4. interlobar
5. main duct
7
Q
two types of acini
A
- serous
- mucous
8
Q
serous acini
A
- nucleus is basal and round
- zymogen granules towards lumen (apical)
- intercellular canaliculi between cells
- microvilli
9
Q
mucous acini
A
- CLEAR cytoplasm
- larger lumen
- may see serous demilunes
- secretion is high carb, low enzyme
- LACK CANALICULI (except demilunes)
10
Q
myoepithelial cell
A
- contractile cells
- outside of acinar cell
- surrport acini during saliva secretion
- expel primary saliva into duct
- contraction in intercalated ducts (keeps patent, prevent backflow)
11
Q
function of ductal cells
A
- move primary saliva
- modify (electrolytes, secrete proteins)
12
Q
intercalated duct
A
- simple cuboidal
- myoepi at basal surface
- central nuc
- add lysozymes and lactoferrins
13
Q
striated duct
A
- columnar
- central nuc
- pale cytoplasm
- surrounded by many elongated mito
- fn: reabsorb and secrete electrolytes
14
Q
excretory ducts location
A
connective tissue septa between lobules
15
Q
excretory ducts
A
- pseudostratified with columnar cells and few basal cells
- may see goblet cells
