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44 Cards in this Set

  • Front
  • Back
What is the secretory portion of salivary glands made up of?
-Stromal tissue
What drains the secretory portion?
A ductal system
What type of cells make up the secretory portion?
Mucous and/or serous cells
How are the mucous/serous cells arranged?
Into acini
What are the 3 duct types in the hierarchy of salivary gland duct systems?
1. Intercalated
2. Striated
3. Excretory
Do the salivary glands have a capsule?
Yes - it dives into the parenchyma and forms septations.
What do the septations of parenchymal tissue in salivary glands create?
What lies within the septations?
Vascular and neural components
What ducts can you clearly see within the parotid gland at low power magnification?
Excretory ducts
What are the ducts that flow into the excretory ducts?
Striated ducts
What ducts flow into striated?
Can you really see intercalated ducts even at high power?
No - they're pinpoint surrounded by a layer of cells
What type of epithelial cells make up intercalated ducts?
Simple cuboidal
Are intercalated ducts very easy to see?
Not really
What's easier to see?
Striated ducts
Why are striated ducts easier to see?
because they have wider and more open lumens, with a clearly ring-shaped cell wall.
What type of cells make up the epithelium of striated ducts?
Simple cuboidal to low columnar
Why are these ducts called striated?
Bc the basal membranes have infoldings projecting up into the cytoplasm.
What is found within striations of striated ducts?
What is done with the ATP from these mitochondria?
It fuels Na ATPases that remove ions from the duct fluid to make it hypotonic.
What term do we use to describe intercalated and striated ducts?
Intralobular - they lie within lobules.
What do striated ducts join to form?
Excretory ducts
What type of ducts are excretory? Why?
Interlobular - because they lie within septations that are BETWEEN lobules.
What type of cells lie within excretory ducts?
Goblet cells
What type of epithelial cells line the MAIN duct of the parotid gland?
Stratified squamous (nonkeratinized)
What type of acini compose the parenchyma of the PAROTID gland?
Serous - very pink
2 things that serous cells secrete:
Where are the secretory products of serous acini stored?
In granules at their apical cytoplasm.
What glands secrete mucous secretions?
-Submandibular (more)
-Sublingual (less)
How can you tell apart mucous versus serous acini?
Serous = dark pink + granules

Mucous = foamy/light + no granules
If you saw a fairly low power slide of the parotid gland what would really stand out?
That it's really pink
What about if you saw that of the submandibular gland?
It's lacy blue and very pale (with H/E)
What if you saw a slide of the sublingual gland?
It looks very mixed up and polka dotted
How does the submandibular gland appear when stained with
PAS = very dark pink mucous acini - and they're pretty few and far between
H/E = very light and hard to distinguish
What is it called when serous cells are sitting on top of a mucous acinus?
Serous demilune
Relative ratio of secretory units present in the Parotid gland:
Mostly Serous
Relative ratio of secretory units present in the Submandibular gland:
-Mostly serous
-Some mucous
Relative ratio of secretory units present in the Sublingual gland:
-Less serous
-Mostly mucous
3 types of papillae on the tongue:
How can you tell what Filiform papillae are?
They have a HIGHLY KERATINIZED surface projection (wispies)
What is located next to filiform papillae?
Fungiform papillae
What do fungiform papillae look like?
They are chunky and kind've mushroomy
What distinguishes CIRCUMVALLATE papillae?
They are also chunky, but have prominent clefts on either side.
What is located within the lateral walls of circumvallate papillae?
Taste buds