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18 Cards in this Set
- Front
- Back
Which salivary gland produces a mixed, but mostly mucous, saliva?
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Sublingual
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Which major salivary gland excretes purely serous/H20 saliva?
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Parotid gland
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Which major salivary gland produces mixed, but mostly serous saliva?
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Submandibular gland
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What enzyme in the mouth begins the breakdown of starch?
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Amylase
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What action do mineral sodium and the organic enzyme lysozyme have in saliva?
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Disinfectants, killing bacteria and micororganisms
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Lubrication for the bolus in your moth comes from _________ secreted mucus acini.
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glycoprotein mucin
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_____, contained in saliva, breaks 1-4 glycoside bonds.
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Alpha-amylase
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What enzyme in saliva helps breakdown fats?
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Lingual Lipase
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What is the "Protective Pellicle" that saliva forms?
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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
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When in an unstimulated state, which salivary gland has the most relative contribution to saliva?
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Submandibular gland
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When in an stimulated state, which salivary gland has the most relative contribution to saliva?
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Parotid
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In what way does the ion content of saliva change as saliva flow increases?
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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.
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Name 4 negative regulators of salivation?
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Fatigue, Lack of Sleep, Fear, Dehydration
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Ion transport in ducts: As the fluid moves down the salivary duct ___ and ____ are reabsorbed while ____ and ____ are secreted.
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Na+, Cl- (reabsorbed); K+, HCO3- (secreted)
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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
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Muscarinic
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How does sympathetic innervation stimulate secretion?
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NE activates B-adrenergic receptors promoting adenylate cyclase activation and thus increased CAMP >>SECRETE SALIVA
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Rank the 5 tastes from concentration needed to taste them (low to high)
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Bitter<Umami<Sour<Salty=Sweet
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What are the three types of taste papillae?
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Fungiform, Foliate, Circumvallate
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