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18 Cards in this Set

  • Front
  • Back
Which salivary gland produces a mixed, but mostly mucous, saliva?
Sublingual
Which major salivary gland excretes purely serous/H20 saliva?
Parotid gland
Which major salivary gland produces mixed, but mostly serous saliva?
Submandibular gland
What enzyme in the mouth begins the breakdown of starch?
Amylase
What action do mineral sodium and the organic enzyme lysozyme have in saliva?
Disinfectants, killing bacteria and micororganisms
Lubrication for the bolus in your moth comes from _________ secreted mucus acini.
glycoprotein mucin
_____, contained in saliva, breaks 1-4 glycoside bonds.
Alpha-amylase
What enzyme in saliva helps breakdown fats?
Lingual Lipase
What is the "Protective Pellicle" that saliva forms?
it is a saliva protein coat on teeth which contains antibacterial compounds. It protects the teeth, thus, problems with salivary glands generally result in dental caries
When in an unstimulated state, which salivary gland has the most relative contribution to saliva?
Submandibular gland
When in an stimulated state, which salivary gland has the most relative contribution to saliva?
Parotid
In what way does the ion content of saliva change as saliva flow increases?
Na + and HCO3- increase because as flow increases, the ion transport mechanisms in the ducts get overwhelmed and can no longer pump Na+ out quick enough and thus Na+ reaches levels comparable to plasma. HCO3- is always found at concentrations higher than in plasma.
Name 4 negative regulators of salivation?
Fatigue, Lack of Sleep, Fear, Dehydration
Ion transport in ducts: As the fluid moves down the salivary duct ___ and ____ are reabsorbed while ____ and ____ are secreted.
Na+, Cl- (reabsorbed); K+, HCO3- (secreted)
Activation of _____receptors by Ach leads to an increase in intracellular Ca2+ which leads to production of DAG and IP3 from PLC which ultimately causes a Ca++ influx >>SALIVA SECRETED
Muscarinic
How does sympathetic innervation stimulate secretion?
NE activates B-adrenergic receptors promoting adenylate cyclase activation and thus increased CAMP >>SECRETE SALIVA
Rank the 5 tastes from concentration needed to taste them (low to high)
Bitter<Umami<Sour<Salty=Sweet
What are the three types of taste papillae?
Fungiform, Foliate, Circumvallate