Which of the following is not an effect of the sympathetic nervous system?

Dilation of pupil

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Inhibition of peristalsis

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Elevation of blood pressure

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Stimulation for saliva secretion

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Solution

The correct option is D Stimulation for saliva secretion
The autonomic nervous system controls the involuntary actions. 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.

Suggest Corrections

	Feature	Sympathetic Nervous Sytem	Parasympathetic Nervous System
(a)	Salivary gland	Stimulates secretion	Inhibits secretion
(b)	Pupil of the eye	Dilate	Constricts
(c)	Heart rate	Decreases	Increases
(d)	Intestinal peristalsis	Stimulates	Inhibits