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Organs Without Dual Innervation. Although most organs are innervated by both sympathetic and parasympathetic nerves, some-including the adrenal medulla, arrector pili muscles, sweat glands, and most blood vessels-receive only sympathetic innervation.
Name the effector organs innervated by the ANS. Describe the location of cell bodies of preganglionic neurons in the sympathetic nervous system. State the course of the sympathetic preganglionic fiber from the spinal cord to the sympathetic trunk. State the options for synapse of the sympathetic preganglionic fiber.