Saliva Flashcards
What are the 3 major exocrine salivary glands?
1) Parotid
2) Submandibular
3) Sublingual
What gland produces the most secretion?
sub mandibular
what gland produces the least secretion?
Sub lingual
What is submandibular secretion?
Serous-Mucin
What is Parotid secretion
Serous
What is Sub lingual secretion?
Mucin
Where is primary secretion?
In acini by acinar cells
Where does secretion pass?
Acinus> intercalated ducts> striated ducts>excretory duct
What is primary secreted saliva?
watery, inorganic ions and enzymes - similar to plasma
how do Columnar cells modify primary to Secondary secretion?
in striated duct it’s modified via secretion/absorption
What is around acini?
layer of smooth muscle made from myoepithelial cells
What does smooth muscle around acini do?
alter flow rate to help secretion of saliva via contraction/relaxation
Are K+ and HCO3- concs. higher in Saliva than plasma?
YES
Are Na+ and Cl- concs. lower in Saliva than plasma?
yes
What are reabsorbed from striated duct?
Na+ and Cl-