Salivary glands (the oral cavity) Flashcards
What are four functions of the salivary glands?
Lubrication and binding, Antibacterial and Enzyme digestion, pH regulation and providing urea for protein synthesis
What are major salivary glands?
Via long ducts, Parotid, Mandibular and sublingual salivary gland
Parotid glands
Largest of the salivary glands, aid in saliva secretion and chewing food
What are the minor salivary glands?
Via short ducts, labial lingual and buccal
What are salivary glands made up from?
secretory acini and ducts
What are the several different types of acinar cells
serous, mucous, seromucous and myoepithelial
What does serous acinus secrete?
proteins in an isotonic watery fluid
What does a mucous acinus secrete?
lubricant
What are salivary glands composed of?
lobules of exocrine tubuloacinar glands that secrete into a duct
What are the intercalated ducts lined by?
simple cuboidal epithelium
what are MEC?
unique population of epithelial cells with contractile properties, similar to smooth muscle cells
What vascularises the parotid gland?
branches of maxillary artery and vein
What innervates the parotid gland?
The glossopharyngeal nerve
What is the parotid gland composed of?
numerous lobules, separated by connective tissue
What vascularises the mandibular gland?
branches of linguofacial artery and vein
What innervates the mandibular gland?
facial nerve
What gland does the mandibular share a capsule with?
sublingual gland
Which secretory unit is the mandibular gland?
mixed serous-mucous acinus
What do mucinous secretory cells contain?
abundant cytoplasmic contents
Where is the sublingual gland located?
deep in the mucous membrane, under the tongue
What are the two parts of the sublingual gland?
Monostomatic and Polystomatic
Monostomatic sublingual gland
more caudal with a single draining duct
Polystomatic sublingual gland
more rostral with several small ducts
What gland has the same innervation as the mandibular gland?
The sublingual gland
What are the minor salivary glands?
labial, buccal, lingual and palatal
What is the zygomatic gland?
dorsal buccal gland
Where does the parotid gland open in the dog?
The carnassial (P4) tooth
Where does the parotid gland open in an Ox?
last or 5th tooth
Where does the parotid gland open in a horse?
P4
Where does the parotid gland open in a pig?
P3
Where is the sublingual gland found?
Located deep to the mucous membrane; under the tongue
What vascularises the sublingual gland?
Lingual artery and vein
What innervates the sublingual gland?
facial nerve
