Salivary Glands Flashcards
What does saliva help do?
- Aids swallowing
- Initiates carbohydrate digestion (amylase)
- Controls bacterial growth
- Lysozyme
- IgA
Name the 3 salivary glands
- Parotid
- Sub-mandibular
- sub-lingual
What are Myoepithelial cells?
Myoepithelial cells help propel the secretions off the salivary glands
Name the 4 different types of ducts
- Intercalated
- Striated
- Interlobular
- Lobar/terminal
What kind of tissue is the intercalated duct?
Simple Cuboidal epithelium
What do intercalated ducts do?
They carry fluid from acini to striated ducts
What kind of duct is this?
Intercalated duct
What kind of duct is this?
Striated Duct
What kind of tissue is the striated duct?
Simple Columnar epithelium
What does the striated duct produce?
Bicarbonate Buffer
Why does the striated duct have basal infoldings?
to increase surface area
What kind of pumps does the striated duct have?
Na/K and Cl/HCO3
What kind of duct is this?
Straited duct
What kind of tissue make up the intelobular duct?
Simple columnar transitioning to stratified cuboidal/columnar
What duct is this?
Intelobular duct
What kind of tissue are the lobar ducts?
Stratified columnar surrounded by connective tissue
How are the granules of Mucuous cells? (lipophilic or hydrophilic?)
their granules are hydrophillic.
Identify the cells
Upper = Mucuous cells
Lower = Serous cells
The acini in the submandibular gland produce mucous and serous secretions, which one is produced proximally and distally?
Proximally = mucous secretions
Distally = serous secretions
The parotid gland is mostly mucous or serous acini?
serous acini
The submandibular gland is mostly mucous or serous acini?
mucous acini
Serous demilunes are a component of this type of gland.
Submandibular and sublingual gland
what are these types of cells?
Upper: serous demilunes
Lower: mucous-secreting cells
What are these cells?
serous demilunes with mucous cells
What is this cell?
serous demilunes
Describe the parotid gland
- largest of the salivary glands
- produces only about 30% of the total salivary output
- the saliva it produced is serous.
What is this?
Parotid gland
What is this?
Parotid gland
What is this?
Parotid gland
What is this?
Parotid gland
Describe the submandibular gland
- produces 60% of the total salivary output
- manufactures mixed saliva, the major portion is serous.
What is this?
Submadibular gland
What is this?
Submandibular gland
Describe the sublingual gland
- composed mostly of mucous acini with serous demilunes
- produces a mixed (mostly mucous) saliva.
What is this?
Sublingual gland
What is this?
sublingual
What is this?
Sub-mandibular
What is mumps?
- is a viral disease caused by a paramyxovirus.
- Painful swelling of the salivary glands
- Painful testicular swelling (orchitis) and rash may also occur
What is the autonomic control of the salivary glands?
Sympathetics
- Serous
- Superior cervical ganglion
- Pre-ganglionics from T1-T3
Para-Sympathetics
- Parotid = lesser petrosal branch of CN IX
- Submandibular and sublingual = Chorda tympani CN VII
What is this?
Pleiotropic Adenoma of the Parotid Gland
What is this?
Pleiotropic Adenoma of the Parotid Gland
What is a Pleiotropic Adenoma of the Parotid Gland?
Is a solitary tumor, slow growing, painless, firm and looks as a single nodular mass.
The tumor is “benign” but is aneuploid (it can recur after resection)
What is this? (the whole thing)
Sialoadenitis
What is Sialodenitis?
- inflammation of the salivary glands
- Small stones may block the salivary ducts leading to swelling of the affected gland
