The sympathetic nervous system controls:

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(A) The sympathetic nervous system is a division of the autonomic nervous system that prepares the body for 'fight-or-flight' responses.It innervates

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Erection of hairs

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(A) The sympathetic nervous system is a division of the autonomic nervous system that prepares the body for 'fight-or-flight' responses.It innervates the arrector pili muscles,which are small muscles attached to hair follicles.When the sympathetic nervous system is activated,these muscles contract,causing the hairs to stand upright,a phenomenon known as 'piloerection' or erection of hairs.

Column-$I$	Column-$II$
$P$. Hydra	$I$. Nerve net
$Q$. Insect	$II$. Brain, ganglia, nerve tissues
$R$. Human	$III$. Brain and spinal cord

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