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27 Cards in this Set
- Front
- Back
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What does saliva do for us?
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assist in the initial activities of digestion or to keep the mouth moist
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What is saliva composed of and what is its ph?
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99,5% water, slightly acidic (6.4 to 6.8%)
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What is the neural control of saliva secretion?
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parasympathetic axons in CN IX stimulate PAROTID salivary gland secretions
parasympathetic axons in CN VII stimulate submandibular and sublingual salivary gland secretions Sympathetic stim from cervical ganglia stimulates mucin secretion |
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What neural stimulation will create mucin secretion?
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sympathetic stimulation from cervical ganglia
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What parasympathetic neural stimulations will secrete saliva?
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CN IX and CN VII
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What sympathetic nerual stimulation will secrete saliva?
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cervical ganglia
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What is the salivary enzyme that begins chemical digestion and what does it break down?
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amylase, breaks down starch
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What muscles contribute to the secretion of saliva?
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masseters
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What is lysozyme?
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antiboides and antibacterial substance contained in saliva that helps inhibit bacterial growth in the oral cavity
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What is the watery medium into which food molecules are dissolved wo taste receptors can be stimulated?
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Lysozyme
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what stimulates taste receptros?
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lysozyme
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What nerves stimulate salivary glands?
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VII and IX
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What are the 3 pairs of multicellular salivary glands located external to the oral cavity?
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parotid salivary glands, submandibular glands, and the sublingual salivary glands
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Which type of salivary gland is the largest?
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parotid
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What gland is located anterior and inferior to the ear, partially overlying the masseter muscle?
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Parotid
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What carries saliva to the oral cavity, travels parallel to the zygomatic arch and opens into the vestibule of the oral cavity near the second upper molar?
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parotid duct
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What is stimulates the parotid gland?
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CN IX
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Where does the parotid duct travel?
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parallel to the zygomatic arch and opens into the vestibule of the oral cavity near the second upper molar
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What opens from each gland in the floor of the mouth on the lateral sides of the lingual frenulum?
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submandibular
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What gland is associated in gleeking?
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submandibular duct
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What gland is inferior to teh tongue and internal to the oral cavity mucosa?
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sublingual salivary glands
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Each sublingual salivary gland extends multiple tiny subligual ducts that open onto what surface of the oral cavity?
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inferior surface
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The salivary glands are primarily innervated by the parasympathetic division of what nervous system?
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autonomic
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What glands does CN VII innervate?
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submandibular and sublingual
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Why does your mout water when you see a delicious dinner in front of you?
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parasympathetic innervation stimulates salivary gland secretion
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Why would a frightened person experience the sensation of a dry mouth?
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sympathetic stimulation inhibis normal secretion from the salivary glands
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Parasympathetic typically slows things down except for where?
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resp and digest system
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