Salivary Glands Flashcards
what is within saliva
water, electrolytes, enzymes, immunoglobulins, mucins, and metabolic wastes
enzyme that breaks down bacterial cell walls
lysozyme
enzyme that digests starch
amylase
what is the immunoglobulin that is in saliva
IgA
what are the mucins within saliva
heavily glycosylated proteins
secretion of saliva is regulated by the ______________ nervous system
autonomic
what stimulated the secretion of saliva
parasympathetic nervous system
what are the two types of glands
exocrine glands and endocrine glands
releases secretions via ducts onto an external or internal body surface
exocrine glands
secrete hormones destined for another part of the body; ductless
endocrine glands
what type of glands are salivary glands
exocrine glands
connective tissue septa divide glands into lobes, which further divide into what
lobules
what surrounds the entire salivary gland
connective tissue capsule
secretory epithelial cells that produce saliva are clustered in groups called _____________ within lobules
acini
the secretory cells in each acinus surround a _______that opens to the duct system
lumen
produce a watery secretion
serous cells
serous cells produce secretions that are high in ___________ and low in ____________
protein
carbs
produce a thicker, viscous secretion
mucous cells
mucous cells produce secretions that are low in _____________ and high in _____________
protein
carbs
mucous cells contain what
mucin
where a crescent of serous cells surrounds a mucous acinus, creating a mixed acinus
serous demilunes
acini open into what
a duct system
saliva is secreted into the ______________ of each acinus
lumen
acini lumen open into what
intecalated ducts
intercalated ducts open into what
striated ducts
striated ducts join what
excretory ducts
where are myoepithelial cells located
on the surface of some acini
aid secretion into ducts
myoepithelial cells
what are the major salivary glands
parotid glands, submandibular glands, and sublingual glands
where are the parotid glands located
in front of and below the ear
parotid glands are capsulated meaning they are covered in ________________
fascia
what percent of saliva do the parotid glands contribute
25%
parotid glands produce ___________ secretions only
serous
what CN stimulates the secretions of the parotid glands
CN IX
where are the submandibular glands located
near angle of mandible
submandibular glands are capsulated meaning they are covered in __________
fascia
what percent of saliva do the submandibular glands produce
60-65%
what type of secretions do the submandibular glands produce
mixed, mostly serous secretions
what CN stimulates secretions from submandibular glands
CN VII
where are sublingual glands located
floor of mouth
what percent of saliva is produced from sublingual glands
5-10%
what CN stimulates secretions from sublingual glands
CN VII
what is another name for parotid ducts
stenson ducts
what muscle does the parotid duct pass over and pierce
passes over masseter and pierces buccinator
what is another name for submandibular ducts
wharton ducts
where do sublingual glands empty
ducts of rivinus and bartholin ducts
what type of secretions do minor salivary glands produce
mostly mucous
von Ebner’s glands associated with circumvallate papillae only have ___________ acini
serous
