PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Lack of salivation
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sympathethic
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parasympathetic
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Sympathetic stimulation results in the release of noradrenaline, which acts upon alpha-and beta-adrenergic receptors. This results in the following effects: Decreased production of saliva by acinar cells. Increased protein secretion.
Detailed explanation-2: -Sympathetic innervation causes vasoconstriction, and parasympathetic innervation, from the glossopharyngeal nerve (CN IX), produces the secretion of saliva.
Detailed explanation-3: -Parasympathetic stimulation elicits a high volume of watery saliva that is low in protein content. Saliva elicited by sympathetic stimulation is low in volume and high in protein content, mainly due to increased exocytosis of salivary proteins from salivary cells.
There is 1 question to complete.