PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is not a response of the sympathetic nervous system?
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Dilation of the pupils
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Elevation of the heart rate
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Increased blood flow to skeletal muscle
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increased activity of the digestive system
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Explanation:
Detailed explanation-1: -The secretory elements of the major salivary glands are supplied with parasympathetic (cholinergic) nerve fibres. Sympathetic stimulation reduces the flow of saliva. So, the correct answer is option D.
Detailed explanation-2: -The sympathetic nervous system moves blood away to other organs, interferes with the regular contractions of the muscles along the digestive tract and decreases secretions needed for proper digestion.
Detailed explanation-3: -In general, sympathetic stimulation causes inhibition of gastrointestinal secretion and motor activity, and contraction of gastrointestinal sphincters and blood vessels. Conversely, parasympathetic stimuli typically stimulate these digestive activities.
There is 1 question to complete.